Pub Date : 2022-01-24DOI: 10.20885/ijcr.vol6.iss2.art7
Salmahaminati Salmahaminati
An analysis of water content and protein levels have been done. This research has a purpose to determine the water content and protein levels in sausage products. The method used is gravimetric method for water content analysis and kjeldahl method for protein content analysis. Samples were put in oven for 3 hours with temperature 105 oC. From the analysis of samples with gravimetric method, the results obtained water content in chicken sausage products with an average of 51.24%, in the cow sausage with an average of 54.93%, on grilled chicken sausage with an average of 50.23% and in roasted beef sausages with an average of 50.03%. The principle of kjeldahl method uses three stages: destruction, distillation and titration. From the result of kjeldahl sample analysis, the result of protein content in chicken sausage product is 9,91%, at 9,15% for beef sausage, 6.34% for roast chicken sausage and 7.37% for roast beef sausage. Based on the results of the analysis, it can be concluded that the water and protein content in sausage products have met the standards set at PT. Jakarana Tama and Sausage quality requirements based on SNI 01-3820-1995 in 2017.
{"title":"Water and Protein Analysis of Sausage product In PT. Jakarana Tama Bogor","authors":"Salmahaminati Salmahaminati","doi":"10.20885/ijcr.vol6.iss2.art7","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art7","url":null,"abstract":"An analysis of water content and protein levels have been done. This research has a purpose to determine the water content and protein levels in sausage products. The method used is gravimetric method for water content analysis and kjeldahl method for protein content analysis. Samples were put in oven for 3 hours with temperature 105 oC. From the analysis of samples with gravimetric method, the results obtained water content in chicken sausage products with an average of 51.24%, in the cow sausage with an average of 54.93%, on grilled chicken sausage with an average of 50.23% and in roasted beef sausages with an average of 50.03%. The principle of kjeldahl method uses three stages: destruction, distillation and titration. From the result of kjeldahl sample analysis, the result of protein content in chicken sausage product is 9,91%, at 9,15% for beef sausage, 6.34% for roast chicken sausage and 7.37% for roast beef sausage. Based on the results of the analysis, it can be concluded that the water and protein content in sausage products have met the standards set at PT. Jakarana Tama and Sausage quality requirements based on SNI 01-3820-1995 in 2017.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80709057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art4
F. I. Fajarwati, Athalia Tasya Hermawati, Sri Widada
An analysis of the determination of N-Total levels in fertilizer has been carried out at the Yogyakarta Agricultural Technology Assessment Center (BPTP). This study aims to determine the total nitrogen content in the fertilizer sample. Analysis of nitrogen content in fertilizers was carried out using the Kjeldahl method. The principle of determining total nitrogen using the Kjeldahl method is that nitrogen in fertilizer samples is hydrolyzed with concentrated sulfuric acid to form ammonium sulfate compounds. The product of the destruction is ammonium sulfate compound which is distilled in an alkaline condition which is then accommodated with boric acid. The resulting distillate is titrated with sulfuric acid solution until a green color changes to pink. From the results of the levels of N-Total obtained in the sample PO.207 with N-Total 1.8136%, PO.208 with N-Total 1.5597%, PO.209 with N-Total 1.5489%, PO.210 with N-Total 1.385%, PO.211 with N-Total 1.1292% and PO.212 with N-Total 2.2401%.
{"title":"ANALYSIS OF TOTAL NITROGEN LEVELS IN SOLID FERTILIZER WITH KJEDAHL METHOD IN BALAI PENGKAJIAN TEKNOLOGI PERTANIAN (BPTP) YOGYAKARTA","authors":"F. I. Fajarwati, Athalia Tasya Hermawati, Sri Widada","doi":"10.20885/ijcr.vol6.iss2.art4","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art4","url":null,"abstract":"An analysis of the determination of N-Total levels in fertilizer has been carried out at the Yogyakarta Agricultural Technology Assessment Center (BPTP). This study aims to determine the total nitrogen content in the fertilizer sample. Analysis of nitrogen content in fertilizers was carried out using the Kjeldahl method. The principle of determining total nitrogen using the Kjeldahl method is that nitrogen in fertilizer samples is hydrolyzed with concentrated sulfuric acid to form ammonium sulfate compounds. The product of the destruction is ammonium sulfate compound which is distilled in an alkaline condition which is then accommodated with boric acid. The resulting distillate is titrated with sulfuric acid solution until a green color changes to pink. From the results of the levels of N-Total obtained in the sample PO.207 with N-Total 1.8136%, PO.208 with N-Total 1.5597%, PO.209 with N-Total 1.5489%, PO.210 with N-Total 1.385%, PO.211 with N-Total 1.1292% and PO.212 with N-Total 2.2401%.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85019040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art2
Devi Lailatus Sholiha
This research was conducted to determine the levels of Chemical Oxygen Demand (COD), Total Dissolve Solid (TDS) and Metal Chromium Hexavalent (Cr VI) from Bengawan Solo River water as monitoring and supervision to determine the condition of water quality. Analysis of COD levels was carried out using closed reflux method using UV-Vis spectrophotmetry, the results obtained were 188.4 mg / L. Analysis of TDS levels using the gravimetric method obtained results of 5,134 mg / L and analysis of Cr-VI levels by UV-Vis spectrophotometry with diphenylcarbazide reagent in acidic conditions obtained results of -2.645 mg / L. Obtained negative levels because the results were below the MDL so that the sample could not be detected because the Cr-VI content was too low. Based on the East Java Provincial Regulation No. 02 of 2008, the standard class III river water quality standard for COD parameters is 100 mg / L. while the TDS parameter was 2000 mg / L and the Cr-VI parameter was 1 mg / L. It was found that COD and TDS levels exceeded the water quality standards so that the Bengawan Solo River water could not be used as freshwater fish cultivators, livestock, irrigation and / or other uses
{"title":"MEASUREMENT OF COD, TDS, AND HEXAVALENT CHROMIC METALS AS A QUALITY MONITORING OF BENGAWAN SOLO RIVER BODIES IN THE LABORATORY UPT OF THE ENVIRONMENTAL SERVICE GRESIK","authors":"Devi Lailatus Sholiha","doi":"10.20885/ijcr.vol6.iss2.art2","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art2","url":null,"abstract":"This research was conducted to determine the levels of Chemical Oxygen Demand (COD), Total Dissolve Solid (TDS) and Metal Chromium Hexavalent (Cr VI) from Bengawan Solo River water as monitoring and supervision to determine the condition of water quality. Analysis of COD levels was carried out using closed reflux method using UV-Vis spectrophotmetry, the results obtained were 188.4 mg / L. Analysis of TDS levels using the gravimetric method obtained results of 5,134 mg / L and analysis of Cr-VI levels by UV-Vis spectrophotometry with diphenylcarbazide reagent in acidic conditions obtained results of -2.645 mg / L. Obtained negative levels because the results were below the MDL so that the sample could not be detected because the Cr-VI content was too low. Based on the East Java Provincial Regulation No. 02 of 2008, the standard class III river water quality standard for COD parameters is 100 mg / L. while the TDS parameter was 2000 mg / L and the Cr-VI parameter was 1 mg / L. It was found that COD and TDS levels exceeded the water quality standards so that the Bengawan Solo River water could not be used as freshwater fish cultivators, livestock, irrigation and / or other uses","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79112943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art3
Salsa Widya Pratiwi, M. Utami
This study aims to determine the value of phenol and Chemical Oxygen Demand (COD) in wastewater in tinplate manufacture process at QA Latinusa, Tbk Laboratory. the value of phenol and COD was analyzed by spectrophotometer UV-Vis HACH at a wavelength of 500 nm. The value of phenol was analyzed using NH4OH, K3[Fe(CN)60 and antypyrine. In addition, the value of COD was analyzed usign reagent A (K2Cr2O7, H2SO4 and HgSO4) and reagent B (Ag2SO4 and H2SO4). The analysis were carried out everyday in one month. According to the data, the average phenol level at the final wastewater was 0,32 ppm annd had met the quality standard after the restest on 6th, 17th, 19th and 23 th. Meanwhile, the COD value of 28,15 ppm had met the quality standard for the environment so it was not harmful for the living organism.
{"title":"Analysis of Levels of Phenol and Chemical Oxygen Demand (COD) in Tinplate Outcome of Electroplating Waste in PT Latinusa, Tbk Cilegon","authors":"Salsa Widya Pratiwi, M. Utami","doi":"10.20885/ijcr.vol6.iss2.art3","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art3","url":null,"abstract":"This study aims to determine the value of phenol and Chemical Oxygen Demand (COD) in wastewater in tinplate manufacture process at QA Latinusa, Tbk Laboratory. the value of phenol and COD was analyzed by spectrophotometer UV-Vis HACH at a wavelength of 500 nm. The value of phenol was analyzed using NH4OH, K3[Fe(CN)60 and antypyrine. In addition, the value of COD was analyzed usign reagent A (K2Cr2O7, H2SO4 and HgSO4) and reagent B (Ag2SO4 and H2SO4). The analysis were carried out everyday in one month. According to the data, the average phenol level at the final wastewater was 0,32 ppm annd had met the quality standard after the restest on 6th, 17th, 19th and 23 th. Meanwhile, the COD value of 28,15 ppm had met the quality standard for the environment so it was not harmful for the living organism.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88330258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art1
I. Yanti
Analysis of hexavalent chromium (Cr-VI) and sulfate ions (SO42-) in river water in the city of Semarang aims to find out the quality of river water compared to Government Regulation No. 22 of 2021. Concentration of chromium (Cr-VI) were determined using the spectrophotometry method with 1,5-diphenylcarbazide reagent and analyzed with a UV-Vis spectrophotometer at a wavelength of 540 nm, while the determination of sulfate levels (SO42-) using the turbidimetric method uses the same spectrophotometer at a wavelength of 420 nm. The results of the analysis obtained Cr(VI) of 0.0094 mg/L and 0.0096 mg/L while SO42- amounted to 17.2105 mg/L and 20.6842 mg/L. The results showed that river water based on PP Number 22 of 2021 on class II river water quality standards, river water quality is still good and can be used according to its designation because it is still below the maximum threshold of Cr(VI) and SO42- which is 0.05 mg/L for Cr (VI) and 300 mg/L levels for SO42-levels.
{"title":"Determination of Cr (VI) and SO42- Using UV-Vis Spectrophotometry in River Water Samples at the Environment Office of Semarang City","authors":"I. Yanti","doi":"10.20885/ijcr.vol6.iss2.art1","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art1","url":null,"abstract":"Analysis of hexavalent chromium (Cr-VI) and sulfate ions (SO42-) in river water in the city of Semarang aims to find out the quality of river water compared to Government Regulation No. 22 of 2021. Concentration of chromium (Cr-VI) were determined using the spectrophotometry method with 1,5-diphenylcarbazide reagent and analyzed with a UV-Vis spectrophotometer at a wavelength of 540 nm, while the determination of sulfate levels (SO42-) using the turbidimetric method uses the same spectrophotometer at a wavelength of 420 nm. The results of the analysis obtained Cr(VI) of 0.0094 mg/L and 0.0096 mg/L while SO42- amounted to 17.2105 mg/L and 20.6842 mg/L. The results showed that river water based on PP Number 22 of 2021 on class II river water quality standards, river water quality is still good and can be used according to its designation because it is still below the maximum threshold of Cr(VI) and SO42- which is 0.05 mg/L for Cr (VI) and 300 mg/L levels for SO42-levels. ","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77176541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art6
F. I. Fajarwati, Annisa Dwi Putri
The domestic communal Wastewater Treatment Installation (IPAL) of Sukunan Village treats domestic wastewater generated from household activities. However, the wastewater treatment carried out does not guarantee the quality of the wastewater produced. In this study, several parameters were tested at the outlet of the domestic communal of Sukunan Village such as TDS, TSS, BOD, and pH. The tests for TDS and TSS levels were carried out using the gravimetric method, that is weighing the mass obtained after separation. BOD levels were tested using the iodometric method (azide modification), which was to determine the volume of sodium thiosulfate (Na2S2O3) solution used for titration of iodine (I2) which was released on the 0th and 5th day samples. While the determination of the pH value is done using universal pH. Based on the test, the TDS level is 1440 mg/L, TSS is 80 mg/L, BOD is 70.5625 mg/L, and has a pH of 7. This shows that there are parameters that exceed the domestic wastewater quality standard. The parameter is TSS, while the parameters TDS, BOD, and pH meet the requirements
{"title":"ANALYSIS OF PHYSICAL AND CHEMICAL PARAMETERS OUTLET WWTP OF DOMESTIC COMMUNAL SUKUNAN VILLAGE IN PUSAT PENGEMBANGAN TEKNOLOGI TEPAT GUNA PENGOLAHAN AIR LIMBAH (PUSTEKLIM) YOGYAKARTA","authors":"F. I. Fajarwati, Annisa Dwi Putri","doi":"10.20885/ijcr.vol6.iss2.art6","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art6","url":null,"abstract":"The domestic communal Wastewater Treatment Installation (IPAL) of Sukunan Village treats domestic wastewater generated from household activities. However, the wastewater treatment carried out does not guarantee the quality of the wastewater produced. In this study, several parameters were tested at the outlet of the domestic communal of Sukunan Village such as TDS, TSS, BOD, and pH. The tests for TDS and TSS levels were carried out using the gravimetric method, that is weighing the mass obtained after separation. BOD levels were tested using the iodometric method (azide modification), which was to determine the volume of sodium thiosulfate (Na2S2O3) solution used for titration of iodine (I2) which was released on the 0th and 5th day samples. While the determination of the pH value is done using universal pH. Based on the test, the TDS level is 1440 mg/L, TSS is 80 mg/L, BOD is 70.5625 mg/L, and has a pH of 7. This shows that there are parameters that exceed the domestic wastewater quality standard. The parameter is TSS, while the parameters TDS, BOD, and pH meet the requirements","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76381226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.20885/ijcr.vol6.iss2.art5
I. Yanti
The effect of water content on soil C-Organic content and soil pH acidity is done by measuring the C-Organic content of soil using the Walkley and Black method while determining the acidity of soil pH is done using actual pH analysis (H2O) and potential pH (pH KCl). The water content (moisture content) in the soil affects the C-Organic content of the soil and the acidity of the soil pH. The greater the water content, the higher the soil's C-Organic content and the smaller the acidity of the soil pH.
{"title":"Effect of Water Content in Soil On C-Organic Levels and Soil Acidity (pH)","authors":"I. Yanti","doi":"10.20885/ijcr.vol6.iss2.art5","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss2.art5","url":null,"abstract":"The effect of water content on soil C-Organic content and soil pH acidity is done by measuring the C-Organic content of soil using the Walkley and Black method while determining the acidity of soil pH is done using actual pH analysis (H2O) and potential pH (pH KCl). The water content (moisture content) in the soil affects the C-Organic content of the soil and the acidity of the soil pH. The greater the water content, the higher the soil's C-Organic content and the smaller the acidity of the soil pH.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73190923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-10DOI: 10.20885/ijcr.vol6.iss1.art5
Febi Indah Fajarwati, Sukma Radik Mayang Sari
Solar is a fuel from petroleum processing which is a source of energy for machines.The quality assurance of diesel testing uses statistical quality control methods, namely Internal Quality Control (IQC). The diesel quality test is based on the CN 48 Diesel Oil specification limits that follow the American Standard Testing and Materials (ASTM). The results of the analysis of the quality assurance test for diesel fuel with several IQC (Internal Quality Control), showed that the quality of Cepu gas station diesel did not meet the specifications for Diesel Oil CN 48. it is because the residual carbon parameters do not meet the specifications for Diesel Oil CN 48.
{"title":"PENGUJIAN KUALITAS SOLAR DAN STATISTIK CONTROL MUTU DI LABORATORIUM PUSAT PENGEMBANGAN SUMBER DAYA MANUSIA MINYAK DAN GAS BUMI CEPU, JAWA TENGAH","authors":"Febi Indah Fajarwati, Sukma Radik Mayang Sari","doi":"10.20885/ijcr.vol6.iss1.art5","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss1.art5","url":null,"abstract":"Solar is a fuel from petroleum processing which is a source of energy for machines.The quality assurance of diesel testing uses statistical quality control methods, namely Internal Quality Control (IQC). The diesel quality test is based on the CN 48 Diesel Oil specification limits that follow the American Standard Testing and Materials (ASTM). The results of the analysis of the quality assurance test for diesel fuel with several IQC (Internal Quality Control), showed that the quality of Cepu gas station diesel did not meet the specifications for Diesel Oil CN 48. it is because the residual carbon parameters do not meet the specifications for Diesel Oil CN 48.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81483307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-10DOI: 10.20885/ijcr.vol6.iss1.art3
Adelia Yuni Dwiputri, Febi Indah Fajarwati, B. C. Matahelumual
Measurement of potassium levels in tap water using the flame photometric method and validating the flame photometric method. Validation was carried out at the Water Laboratory, Groundwater Center and Environmental Geology Bandung. The test parameters for validation include linearity, accuracy, precision, detection limit and quantitation limit. The results of determining the validation parameters obtained good linearity, indicated by the correlation coefficient value of 0.9998, detection limit of 3.681 mg / l, quantity limit of 12.27 mg / l, good precision indicated by% RSD of 1.139%, good accuracy indicated by the% recovery value of 103.88%, based on the t test and F test.
{"title":"VALIDASI PENENTUAN KALIUM (K) DALAM SAMPEL AIR MENGGUNAKAN FLAME FOTOMETER","authors":"Adelia Yuni Dwiputri, Febi Indah Fajarwati, B. C. Matahelumual","doi":"10.20885/ijcr.vol6.iss1.art3","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss1.art3","url":null,"abstract":"Measurement of potassium levels in tap water using the flame photometric method and validating the flame photometric method. Validation was carried out at the Water Laboratory, Groundwater Center and Environmental Geology Bandung. The test parameters for validation include linearity, accuracy, precision, detection limit and quantitation limit. The results of determining the validation parameters obtained good linearity, indicated by the correlation coefficient value of 0.9998, detection limit of 3.681 mg / l, quantity limit of 12.27 mg / l, good precision indicated by% RSD of 1.139%, good accuracy indicated by the% recovery value of 103.88%, based on the t test and F test.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"32 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77081301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-10DOI: 10.20885/ijcr.vol6.iss1.art2
Randy Ramadani, Sigit Samsunar, Maisari Utami
Domestic wastewater is waste water originating from businesses and/or activities in settlements, restaurants, offices, commerce, apartments and dormitories that have the potential to pollute the environment. This is due to the temperature, power of hydrogen (pH), Chemical Oxygen Demand (COD), and Biologycal Oxygen Demand (BOD) values that are not in accordance with the Regulation of the Ministry of Environment and Forestry of the Republic of Indonesia Number: P.68/Menlh/Setjen/Kum.1/8/2016 concerning Domestic Wastewater Quality Standards. To overcome this, it is necessary to analyze the waste before it is disposed of in the environment. Laboratory analysis of domestic wastewater samples with code 063/AL/Lablingk_DLH/2021 includes determination of temperature, pH, COD and BOD levels. Temperature analysis was performed using a thermometer, pH analysis was performed using a pH meter, COD analysis was performed using a UV-Vis spectrophotometer and BOD analysis was performed using the iodometric titration method. The results obtained were a temperature value of 25.95 oC, a pH value of 7.415, a COD value of 13.299 mg/L and a BOD value of 1.512 mg/L. The results of the analysis of temperature, pH, COD and BOD showed numbers below the threshold quality standard for domestic waste
{"title":"ANALISIS SUHU, DERAJAT KEASAMAN (pH), CHEMICAL OXYGEN DEMAND (COD), DAN BIOLOGYCAL OXYGEN DEMAND (BOD) DALAM AIR LIMBAH DOMESTIK DI DINAS LINGKUNGAN HIDUP SUKOHARJO","authors":"Randy Ramadani, Sigit Samsunar, Maisari Utami","doi":"10.20885/ijcr.vol6.iss1.art2","DOIUrl":"https://doi.org/10.20885/ijcr.vol6.iss1.art2","url":null,"abstract":"Domestic wastewater is waste water originating from businesses and/or activities in settlements, restaurants, offices, commerce, apartments and dormitories that have the potential to pollute the environment. This is due to the temperature, power of hydrogen (pH), Chemical Oxygen Demand (COD), and Biologycal Oxygen Demand (BOD) values that are not in accordance with the Regulation of the Ministry of Environment and Forestry of the Republic of Indonesia Number: P.68/Menlh/Setjen/Kum.1/8/2016 concerning Domestic Wastewater Quality Standards. To overcome this, it is necessary to analyze the waste before it is disposed of in the environment. Laboratory analysis of domestic wastewater samples with code 063/AL/Lablingk_DLH/2021 includes determination of temperature, pH, COD and BOD levels. Temperature analysis was performed using a thermometer, pH analysis was performed using a pH meter, COD analysis was performed using a UV-Vis spectrophotometer and BOD analysis was performed using the iodometric titration method. The results obtained were a temperature value of 25.95 oC, a pH value of 7.415, a COD value of 13.299 mg/L and a BOD value of 1.512 mg/L. The results of the analysis of temperature, pH, COD and BOD showed numbers below the threshold quality standard for domestic waste","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86734880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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