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High performance liquid chromatographic analysis of lercanidipine in human breast milk 人母乳中雷卡尼地平的高效液相色谱分析
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2019-06-23 DOI: 10.25135/JCM.23.19.03.1223
Evrim Kepekci Tekkeli, I. Gazioğlu, Gizem Tırıs, C. Önal
A simple, rapid, precise and accurate isocratic reversed phase HPLC method was developed and validated for the determination of lercanidipine hydrochloride in pharmaceutical tablets and spiked human breast milk. The chromatographic separation was achieved on C18 (250×4.6 mm×5μm) column using a mobile phase consisting of acetonitrile and phospate buffer (pH=4) (55:45, v/v) at a flow rate of 1.1 mL/min and UV detection at 237 nm. The linearity of the proposed method was investigated in the range of 1.0-40 μg/mL (r=0.9990). The method was validated in terms of accuracy, precision, reproducibility, specificity, robustness, and detection and quantification limits, in accordance with ICH guidelines. The proposed method is found as suitable for routine quantification of lercanidipine in human breast milk.
建立了一种简便、快速、精密、准确的等度反相高效液相色谱法测定片剂和母乳中盐酸乐卡地平的含量。色谱分离在C18(250×4.6mm×5μm)柱上实现,流动相由乙腈和磷酸缓冲液(pH=4)(55:45,v/v)组成,流速为1.1mL/min,紫外检测波长为237nm。研究了所提出方法在1.0-40μg/mL范围内的线性(r=0.9990)。根据ICH指南,该方法在准确性、精密度、再现性、特异性、稳健性以及检测和定量限方面得到了验证。该方法适用于母乳中乐卡地平的常规定量。
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引用次数: 0
Use of ion chromatography method on the determination of some anions in the water collected from Sakarya, Turkey 离子色谱法测定土耳其萨卡里亚水中某些阴离子
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2019-06-23 DOI: 10.25135/JCM.26.19.03.1221
H. Altundağ, S. Agar, Esra Altintig, A. Ateş, Sezen Sivrikaya
In this study simultaneous analysis of seven different anions (Fluoride, Chloride, Bromide, Nitrite, Nitrate, Phosphate, and Sulfate) in13 different water samples collected from Sakarya/Turkey and it was conducted with ion chromatography method. Analyzes were performed simultaneously using the ion chromatography method. Some validation tests and the optimum conditions for the determination of anions were studied. The analysis of anions was accomplished by the dilution of the sample injection device. Samples were used to adjust the terms of the device and the results were recorded. Ion chromatography (IC) is now considered as an excellent technique for the analysis of ions in many samples.
本研究采用离子色谱法同时分析了从萨卡里亚/土耳其采集的13个不同水样中的7种不同阴离子(氟化物、氯化物、溴化物、亚硝酸盐、硝酸盐、磷酸盐和硫酸盐)。同时使用离子色谱法进行分析。对阴离子测定的一些验证试验和最佳条件进行了研究。阴离子的分析是通过稀释样品注入装置来完成的。使用样品来调整装置的条件,并记录结果。离子色谱法(IC)现在被认为是分析许多样品中离子的优秀技术。
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引用次数: 3
Determination of Boron in hazelnut varieties with the addition of sorbitol by using ICP-OES and ultrasonic nebulization after microwave digestion system 微波消解-超声雾化-电感耦合等离子体发射光谱法测定榛子中硼
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-12-22 DOI: 10.25135/JCM.20.18.11.1076
M. S. Dundar, H. Altundağ, Gülşah Tunca
Boron is an essential nutrient for plants and an essential element for many organisms, but can be toxic to aquatic and terrestrial organisms above certain concentrations. The aim of this research is determining the Boron content of four varieties of Hazelnut (Corylus avellana L.) from Sakarya. Inductively coupled plasma optical emission spectrometry (ICP-OES) with ultrasonic nebulization (USN) was used for the determination of Boron contents. This method is based on microwave digestion system and reduced memory effect of Boron by using sorbitol. Different conditions were optimized for this method. Four hazelnut varieties, eight soil samples and certificated reference material (NIM-GBW10012) were analyzed. The Boron contents were found as 18.27, 28.3, 38.6, 17.6 mg/kg in Kara, Sivri, Delisava and Tombul hazelnut varieties, respectively. And Boron contents of soil samples were between 30.44 to 196.79 mg/kg. The results revealed that the Turkish hazelnut is a good natural source of Boron.
硼是植物的必需营养素,也是许多生物的必需元素,但在特定浓度以上,对水生和陆地生物可能有毒。本研究的目的是测定四个品种榛子(Corylus avellana L.)的硼含量。采用超声雾化电感耦合等离子体发射光谱法(ICP-OES)测定硼含量。该方法基于微波消解系统,利用山梨醇降低硼的记忆效应。对该方法的不同条件进行了优化。对4个榛子品种、8个土壤样品和NIM-GBW10012标准物质进行了分析。卡拉榛子、西夫里榛子、Delisava榛子和汤布尔榛子的硼含量分别为18.27、28.3、38.6和17.6mg/kg。土壤硼含量在30.44~196.79mg/kg之间。结果表明,土耳其榛子是硼的良好天然来源。
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引用次数: 2
Effect of priming on thymoquinone content and in vitro plant regeneration with tissue culture of black cumin (Nigella sativa L.) seeds 引发剂对黑孜然种子胸腺醌含量及离体植株再生的影响
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-12-22 DOI: 10.25135/jcm.18.18.09.950
F. Rezai, S. Isik, M. Kartal, S. Erdem
The aim of this study is to analyze the changes on thymoquinone content, which is the major constituent of black cumin (Nigella sativa L.) seeds, by using priming methods. For the priming studies, seeds placed in distilled water (18 20 hours), PEG (Polyethylene glycol 10%, 20%) and mannitol (4% and 6%) for 20 hours and subsequently dried for 24 hours on blotting paper at room temperature (24 C ± 1 C). The best priming results were obtained in the 4% of mannitol treatment. Control (not primed) Nigella seeds and 4% of mannitol primed seeds were planted in both greenhouse and farm conditions. Seed extracts were analyzed with HPLC to compare the amount of thymoquinone. The results reveal that seed priming with 4% of mannitol increases the amount of thymoquinone in Nigella sativa. In addition, the effects of plant growth hormones on callus regeneration of these primed seeds were investigated herein.
本研究的目的是利用引发法分析黑孜然种子中主要成分胸腺醌含量的变化。对于启动研究,将种子放入蒸馏水(18-20小时)、PEG(10%、20%聚乙二醇)和甘露醇(4%和6%)中20小时,然后在室温(24 C±1 C)下在吸墨纸上干燥24小时。4%甘露醇处理的引发效果最好。对照(未经处理)Nigella种子和4%甘露醇处理的种子在温室和农场条件下种植。用高效液相色谱法对种子提取物进行分析,以比较胸腺肽醌的含量。结果表明,4%甘露醇种子引发能增加奈杰尔拉中胸腺肽醌的含量。此外,本文还研究了植物生长激素对这些引发种子愈伤组织再生的影响。
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引用次数: 4
Distribution of some major and trace elements in the lower Sakarya River by using ICP-MS 应用ICP-MS测定萨卡里亚河下游部分主、微量元素的分布
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-12-22 DOI: 10.25135/jcm.22.18.11.1073
M. S. Dundar, H. Altundağ
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引用次数: 5
Quantitative determination of some phenolics in Origanum laevigatum Boiss. extracts via validated LC-MS/MS metod and antioxidant activity 杜鹃花中某些酚类物质的定量测定。经验证的LC-MS/MS法测定提取物的抗氧化活性
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-12-22 DOI: 10.25135/JCM.21.18.11.1115
S. Carikci, T. Kilic, Züleyha Özer, T. Dirmenci, T. Arabaci, A. Gören
In this study, quantities of some phenolics; caffeic acid, (E)-ferulic acid, rosmarinic acid, chlorogenic acid, fumaric acid, gallic acid, pyrogallol and vanillin in the directly methanol (M1), chloroform (C), acetone (Ac) and methanol (M2) extratcs obtained from Origanum laevigatum Boiss. from Turkey were investigated via liquid chromatography and tandem mass spectrometry (LC-MS/MS). Curcumin was used as an internal standard. Caffeic acid, chlorogenic acid, rosmarinic acid and gallic acid were determined as the most abundant phenolic acids in the studied extracts using LC-MS/MS. In LC-MS/MS measurements relative standard deviations (RSD %) for caffeic acid, (E)-ferulic acid, rosmarinic acid, chlorogenic acid, fumaric acid, gallic acid, pyrogallol and vanillin were found to be 8.04, 5.21, 5.45, 3.73, 5.44, 4.85, 5.47 and 6.57 % respectively. For the investigated analytes, the correlation coefficient was found in the range of 0.9803 to 0.9981. Furthermore, antioxidant properties of the extracts were determined based on 2,2-diphenyl-1picrylhydrazyl (DPPH), β-carotene linoleic acid and cupric (Cu2) ion reducing power assay (CUPRAC). Acetone (Ac) and methanol (M2) extracts showed high activity in all test assays due to their high concentration of rosmarinic acid, caffeic acid and gallic acid in the extracts.
在这项研究中,一些酚类物质的数量;咖啡酸、(E)-阿威酸、迷迭香酸、绿原酸、富马酸、没食子酸、邻苯三酚和香兰素在直接甲醇(M1)、氯仿(C)、丙酮(Ac)和甲醇(M2)萃取物中的含量。采用液相色谱和串联质谱法(LC-MS/MS)对产自土耳其的黄芪多糖进行了研究。以姜黄素为内标。采用LC-MS/MS法测定了咖啡酸、绿原酸、迷迭香酸和没食子酸是提取物中含量最高的酚酸。咖啡酸、(E)-阿魏酸、迷迭香酸、绿原酸、富马酸、没食子酸、邻苯三酚和香兰素的相对标准偏差(RSD %)分别为8.04、5.21、5.45、3.73、5.44、4.85、5.47和6.57%。分析物的相关系数为0.9803 ~ 0.9981。以2,2-二苯基-1吡啶酰肼(DPPH)、β-胡萝卜素亚油酸和铜离子还原力(CUPRAC)测定提取物的抗氧化性能。丙酮(Ac)和甲醇(M2)提取物由于其含有高浓度的迷迭香酸、咖啡酸和没食子酸,在所有的试验中均表现出较高的活性。
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引用次数: 9
Validation of ultrasonic extraction method for the quantification of phthalates in poly (vinyl chloride) and polypropylene matrices at low concentrations by gas-chromatography time of flight mass spectrometry (GC-TOFMS) 用气相色谱-飞行时间质谱法(GC-TOFMS)对低浓度聚氯乙烯和聚丙烯基质中邻苯二甲酸酯的超声提取方法进行验证
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-12-22 DOI: 10.25135/JCM.18.12.1094
N. Nhlapo, D. Prevoo-Franzsen, Maria Fernades Whaley
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引用次数: 3
The Consultative Committee for Metrology in Chemistry and Biology – CCQM 化学及生物计量谘询委员会(CCQM
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-06-06 DOI: 10.25135/JCM.11.17.12.060
R. Kaarls
Reliable, correct results of chemical measurements and analysis, with a measurement uncertainty statement fit for its purpose, are highly important for drawing the right conclusions and making the right decisions. Addressing the complex parameters influencing climate change, the consequences of unsafe food, the costly clinical diagnostics and the health effects of expensive pharmaceuticals, as well as addressing the need for new sustainable energy sources and fair trade, require accurate measurements. In 1993, by decision of the International Committee for Weights and Measures (CIPM), being the directive and supervisory body under the intergovernmental treaty, known as the “Metre Convention” and signed in 1875 with the aim of establishing and maintaining a global measurement system, the scientific Consultative Committee for Metrology in Chemistry and Biology (CCQM) was created. The CCQM is charged to establish global comparability of chemical and biological measurements and analysis through metrological traceability to the International System of Units, the SI, and very well defined pure reference materials and (primary) measurement methods and procedures. The article describes in short in which context the CCQM started and developed, how it is currently organized, what it has achieved and which priorities are being set in addressing the most important chemical and biological measurement issues in the near and medium term future.
可靠、正确的化学测量和分析结果,以及适合其目的的测量不确定度声明,对于得出正确的结论和做出正确的决定非常重要。处理影响气候变化的复杂参数、不安全食品的后果、昂贵的临床诊断和昂贵药品对健康的影响,以及解决对新的可持续能源和公平贸易的需求,都需要精确的测量。1993年,根据国际度量衡委员会(CIPM)的决定,成立了化学与生物计量科学咨询委员会(CCQM),该委员会是1875年签署的旨在建立和维护全球计量系统的政府间条约“米制公约”的指导和监督机构。CCQM的任务是建立化学和生物测量和分析的全球可比性,通过计量溯源到国际单位制(SI),以及非常明确的纯参考物质和(主要)测量方法和程序。本文简要描述了CCQM在何种背景下开始和发展,它目前是如何组织的,它取得了什么成就,以及在近期和中期未来解决最重要的化学和生物测量问题时设置了哪些优先事项。
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引用次数: 7
Study the effect of different dyeing conditions of extracted natural dye from leaves of neem on silk fabrics 研究了印楝叶提取天然染料不同染色条件对真丝织物的染色效果
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-06-06 DOI: 10.25135/JCM.12.18.01.061
Nabawia A. r Abdel-Zahe, Manal T. H. Moselhey, O. W. Guirguis
The aim of the present work was to evaluate the effect of artificial day light for 160 h on silk fabrics dyeing with different conditions such as; different dye bath pH values, different dyeing temperatures, and different dyeing times; of extracted natural dye from Azadirachta indica (neem) leaves. The reflectance spectra of the untreated and treated silk fabrics were followed using spectrophotometer technique. The effects of dyeing conditions in the optical parameters, such as; CIE tristimulus values, color parameters, absorption coefficient as well as extinction coefficient and color strength, were determined before and after exposure. The obtained results indicate that the silk fabrics were found to be highly dependent on either of these different dyeing conditions and/or artificial day light exposure. Also, variations in the values of the optical band gap energy were detected. Improvement in the dyeing process were produced which may be attributed to the induced structural change due to the variation in the chemical bonds in silk fabrics. The present work gives the chance to produce a new traditional natural dye to meet the environmental future demands technology of high quality fantastic dyed pattern.
本工作的目的是评价人工日光160h对不同条件下丝绸织物染色的影响,如:;不同的染浴pH值、不同的染色温度和不同的染色时间;从印楝叶中提取的天然染料。采用分光光度计技术对未经处理和经处理的丝绸织物的反射光谱进行了跟踪。染色条件对光学参数的影响,如:;在曝光前后测定CIE三刺激值、颜色参数、吸收系数以及消光系数和颜色强度。所获得的结果表明,发现丝绸织物高度依赖于这些不同的染色条件和/或人工日光暴露。此外,还检测到光学带隙能量的值的变化。染色工艺的改进可能归因于丝绸织物中化学键的变化引起的结构变化。本工作为生产一种新的传统天然染料提供了机会,以满足环境未来对高质量梦幻染色图案技术的要求。
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引用次数: 5
Comparative determination of ruscogenins content in Butcher’s Broom rhizome samples gathered from the populations grown in different soil conditions in the Marmara Region and attempts for pilot field cultivation of rhizomes 马尔马拉地区不同土壤条件下生长的布彻扫帚根状茎样品中ruscogens含量的比较测定和根状茎中试种植的尝试
IF 1.3 Q3 CHEMISTRY, ANALYTICAL Pub Date : 2018-06-06 DOI: 10.25135/JCM.17.18.05.094
Gulcin H. Ozer, Etil Guzelmeric, Gozde Sezgin, Ercan Ozyurek, Avni Arslan, E. Sezik, E. Yeşilada
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引用次数: 6
期刊
Journal of Chemical Metrology
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