Pub Date : 2018-06-15DOI: 10.26850/1678-4618eqj.v17.1.1992.p105-112
M. V. Boldrin Zanoni
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{"title":"Autoinhibition offects of the Sn(OH)4 film on dropping mercury electrode","authors":"M. V. Boldrin Zanoni","doi":"10.26850/1678-4618eqj.v17.1.1992.p105-112","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v17.1.1992.p105-112","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144693","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p21-31
Alírio De Carvalho
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{"title":"Estudos da produção de metabólitos secundários por Aspergillus nidulans","authors":"Alírio De Carvalho","doi":"10.26850/1678-4618eqj.v19.1.1994.p21-31","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p21-31","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144699","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p57-65
Dênia Mendes De Souza Valladão
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{"title":"Separação e identificação de fármacos diuréticos","authors":"Dênia Mendes De Souza Valladão","doi":"10.26850/1678-4618eqj.v19.1.1994.p57-65","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p57-65","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144712","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p67-74
José Zuanon Netto
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{"title":"Metodologia para determinação quantitativa de Ca2+ por cromatografia planar e espectrofotometria","authors":"José Zuanon Netto","doi":"10.26850/1678-4618eqj.v19.1.1994.p67-74","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p67-74","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144717","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p9-13
Carlos Roberto Sobreira BEATRICE
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{"title":"Efeito do cromo no comportamento das vacâncias em ligas diluídas de Al-Mg","authors":"Carlos Roberto Sobreira BEATRICE","doi":"10.26850/1678-4618eqj.v19.1.1994.p9-13","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p9-13","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144732","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p49-55
A. De Carvalho
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{"title":"Production of nucleic acid-related substances by Aspergillus flavus in chemically defined media","authors":"A. De Carvalho","doi":"10.26850/1678-4618eqj.v19.1.1994.p49-55","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p49-55","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144704","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 : 2018-06-14DOI: 10.26850/1678-4618eqj.v19.1.1994.p81-88
Pedro De Magalães Padilha
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{"title":"Termodecomposição de materiais celulósicos puros e contendo cátions cobre(II) adsorvidos","authors":"Pedro De Magalães Padilha","doi":"10.26850/1678-4618eqj.v19.1.1994.p81-88","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p81-88","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144725","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 : 2018-06-08DOI: 10.26850/1678-4618eqj.v20.1.1995.p49-60
Cássia Tereza Ramelo
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{"title":"Preparação e caracterização térmica de derivados da 8-hidroxiquinolina dos estado sólido","authors":"Cássia Tereza Ramelo","doi":"10.26850/1678-4618eqj.v20.1.1995.p49-60","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v20.1.1995.p49-60","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144768","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 : 2018-06-08DOI: 10.26850/1678-4618eqj.v20.1.1995.p9-16
Marcos José Correia
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{"title":"Produção de proteína monocelular e RNA a partir de Candida utilis cultivada em melaço","authors":"Marcos José Correia","doi":"10.26850/1678-4618eqj.v20.1.1995.p9-16","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v20.1.1995.p9-16","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69144776","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 : 2018-02-05DOI: 10.1590/S0100-46702008000200006
C. Pasha, B. Narayana
A simple spectrophotometric method for the determination of cefotaxime, ceftriaxone, cefadroxil and cephalexin with variamine blue is presented. The determination is based on the hydrol- ysis of β-lactam ring of cephalosporins with sodium hydroxide which subsequently reacts with iodate to liberate iodine in acidic medium. The liberated iodine oxidizes variamine blue to violet colored species of maximum absorption at 556 nm. The absorbance is measured within the pH range of 4.0- 4.2. Beer's law is obeyed in the range of 0.5-5.8 ∝g mL-1, 0.2-7.0 ∝g mL-1, 0.2-5.0 ∝g mL-1 and 0.5- 8.5 ∝g mL-1 for cefotaxime, ceftriaxone, cefadroxil and cephalexin respectively. The analytical param- eters were optimized and the method is successfully applied for the determination of cefotaxime, cef- triaxone, cefadroxil and cephalexin in pharmaceuticals.
{"title":"A simple method for the spectrophotometric determination of cephalosporins in pharmaceuticals using variamine blue","authors":"C. Pasha, B. Narayana","doi":"10.1590/S0100-46702008000200006","DOIUrl":"https://doi.org/10.1590/S0100-46702008000200006","url":null,"abstract":"A simple spectrophotometric method for the determination of cefotaxime, ceftriaxone, cefadroxil and cephalexin with variamine blue is presented. The determination is based on the hydrol- ysis of β-lactam ring of cephalosporins with sodium hydroxide which subsequently reacts with iodate to liberate iodine in acidic medium. The liberated iodine oxidizes variamine blue to violet colored species of maximum absorption at 556 nm. The absorbance is measured within the pH range of 4.0- 4.2. Beer's law is obeyed in the range of 0.5-5.8 ∝g mL-1, 0.2-7.0 ∝g mL-1, 0.2-5.0 ∝g mL-1 and 0.5- 8.5 ∝g mL-1 for cefotaxime, ceftriaxone, cefadroxil and cephalexin respectively. The analytical param- eters were optimized and the method is successfully applied for the determination of cefotaxime, cef- triaxone, cefadroxil and cephalexin in pharmaceuticals.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0100-46702008000200006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42883952","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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