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美国分析化学(英文)最新文献

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Development, Validation and Application of a Spectrofluorimetric Method for the Quantification of Nevirapine in Pharmaceutical Formulations Tablets and Suspensions 制剂、片剂和混悬液中奈韦拉平的荧光定量方法的建立、验证和应用
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.136015
Lucien Murhula Namegabe, Aladin Ombeni Mahano, S. Sarr
{"title":"Development, Validation and Application of a Spectrofluorimetric Method for the Quantification of Nevirapine in Pharmaceutical Formulations Tablets and Suspensions","authors":"Lucien Murhula Namegabe, Aladin Ombeni Mahano, S. Sarr","doi":"10.4236/ajac.2022.136015","DOIUrl":"https://doi.org/10.4236/ajac.2022.136015","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500787","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}
引用次数: 0
A Novel RP-HPLC Method for Estimating Fulvestrant, Benzoyl Alcohol, and Benzyl Benzoate in Injection Formulation 一种新型反相高效液相色谱法测定注射剂型中氟维司汀、苯甲酰醇和苯甲酸苄酯的含量
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.137016
A. R. Nekkalapudi, V. Veldi, S. Pippalla
{"title":"A Novel RP-HPLC Method for Estimating Fulvestrant, Benzoyl Alcohol, and Benzyl Benzoate in Injection Formulation","authors":"A. R. Nekkalapudi, V. Veldi, S. Pippalla","doi":"10.4236/ajac.2022.137016","DOIUrl":"https://doi.org/10.4236/ajac.2022.137016","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500797","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}
引用次数: 2
Quantitative Measurement of the Chemical Composition of Fatty Acid of Cocoa Butter and the Isotopic Content of Glycerol Contained in Cocoa Butter by the NMR 13C from the INEPT Sequence and Characterization of the Geographical Origin of the Cocoa 用INEPT序列核磁共振13C定量测定可可脂脂肪酸的化学组成和可可脂中甘油的同位素含量，并对可可的产地进行鉴定
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.133007
Didier Diomandé, Tiemoko Touré Dro, Jacques Sagne Akpa, Silvestre Virginie, I. Tea, G. Remaud
{"title":"Quantitative Measurement of the Chemical Composition of Fatty Acid of Cocoa Butter and the Isotopic Content of Glycerol Contained in Cocoa Butter by the NMR <sup>13</sup>C from the INEPT Sequence and Characterization of the Geographical Origin of the Cocoa","authors":"Didier Diomandé, Tiemoko Touré Dro, Jacques Sagne Akpa, Silvestre Virginie, I. Tea, G. Remaud","doi":"10.4236/ajac.2022.133007","DOIUrl":"https://doi.org/10.4236/ajac.2022.133007","url":null,"abstract":"The determination of the chemical composition of cocoa butter and the isotopic contents of the carbons (C-2, C-1 and C-3) of the glycerol contained in the cocoa butter were measured by the NMR-C from the INEPT sequence. This technique has already been applied to triglycerides of animal origin. Thus, cocoa butter is made up of nearly 66% saturated fatty acid composed mainly of stearic acid and palmitic acid. Monounsaturated fatty acids represented by oleic acid have an average content of 31% and polyunsaturated fatty acids represent less than 4%. Likewise, the isotopic contents of the glycerol of the triglycerides of cocoa butter in C of the carbons C-2, C-1 and C-3 were measured directly and values vary from −11‰ to −19‰ for the C-2 and from −39‰ to −41‰ for all C-1 and C-3 because of the symmetry of glycerol.","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"46 8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500456","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}
引用次数: 0
Determination of Atomic Fraction of Isotope Carbon-13 Directly in Urea, Benzophenone, Nitrobenzene, Benzoic Acid and 2-Hydroxybenzoic Acid 尿素、二苯甲酮、硝基苯、苯甲酸和2-羟基苯甲酸中同位素碳-13原子分数的直接测定
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.136014
L. Parulava, L. Eliashvili, Vakhtang Betlemidze, Natia Mzareulishvili
{"title":"Determination of Atomic Fraction of Isotope Carbon-13 Directly in Urea, Benzophenone, Nitrobenzene, Benzoic Acid and 2-Hydroxybenzoic Acid","authors":"L. Parulava, L. Eliashvili, Vakhtang Betlemidze, Natia Mzareulishvili","doi":"10.4236/ajac.2022.136014","DOIUrl":"https://doi.org/10.4236/ajac.2022.136014","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500581","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}
引用次数: 2
Microwave Detection, Disruption, and Inactivation of Microorganisms 微生物的微波检测、破坏和灭活
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.134010
V. Law, D. Dowling
{"title":"Microwave Detection, Disruption, and Inactivation of Microorganisms","authors":"V. Law, D. Dowling","doi":"10.4236/ajac.2022.134010","DOIUrl":"https://doi.org/10.4236/ajac.2022.134010","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500524","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}
引用次数: 2
Phytochemical Tests, Assessment of Antioxidant Properties and Isolation of Two Compounds of Ethyl Acetate Extract of Chadian Propolis: Case of Bebotho (Southern Chad) 乍得蜂胶乙酸乙酯提取物的植物化学试验、抗氧化性能评价及两种化合物的分离——以乍得南部Bebotho为例
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.137017
S. M. Betoloum, Abel Mbaiogaoun, S. Mbaihougadobe, E. Talla
{"title":"Phytochemical Tests, Assessment of Antioxidant Properties and Isolation of Two Compounds of Ethyl Acetate Extract of Chadian Propolis: Case of Bebotho (Southern Chad)","authors":"S. M. Betoloum, Abel Mbaiogaoun, S. Mbaihougadobe, E. Talla","doi":"10.4236/ajac.2022.137017","DOIUrl":"https://doi.org/10.4236/ajac.2022.137017","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500809","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}
引用次数: 0
Simple Quantitation of Flucytosine in Low Volume Serum Samples and Evaluation of Common Endogenous Interferences by HPLC-UV 低容量血清中氟胞嘧啶的简单定量及常见内源干扰的HPLC-UV评价
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.139020
Abdul Rafiq Khan, A. Alothaim, W. Tamimi, Majid Alshaibani, Souad Marwan Al Enazi, S. Saad, K. M. Khan
{"title":"Simple Quantitation of Flucytosine in Low Volume Serum Samples and Evaluation of Common Endogenous Interferences by HPLC-UV","authors":"Abdul Rafiq Khan, A. Alothaim, W. Tamimi, Majid Alshaibani, Souad Marwan Al Enazi, S. Saad, K. M. Khan","doi":"10.4236/ajac.2022.139020","DOIUrl":"https://doi.org/10.4236/ajac.2022.139020","url":null,"abstract":"5-Fluorocytosine (5-FC) is used for the treatment of several infections. It is extremely important to monitor blood level concentration for maximum ac-tivity to avoid its side effects. A simple, faster, and more accurate analytical method is developed and validated using high-performance liquid chromatography with UV detection in a very low-volume serum sample. Exactly 50 µL of serum was precipitated with 5% trichloroacetic acid. After mixing and centrifugation, 20 µL of supernatant was injected into the HPLC column. Detection was performed at 280 nm. The method is very specific and free from interfering substances due to different drugs and their different circulating metabolites. The limit of detection (LOD) and limit of quantification (LOQ) were found to be 0.50 μg/L and 1.0 μg/L, respectively. The method was linear in the range of 5 - 150 μg/L in the serum sample. In method comparison, the correlation coefficient r 2 was 0.999 and the percentage recovery was 90% - 105% on four levels of the quality control samples. Within run and between run precision was found to be less than 2.2% at four different concentrations (5, 25, 50, and 100 μg/L). A simple, faster, and more accurate HPLC-UV method is developed which is very useful for monitoring 5-FC concentration in low volume serum samples without evaporation step and ion exchange chromatography within minutes.","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"144 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500905","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}
引用次数: 0
Carbonization, Activation and Description of Activated Carbon from Palm Tree Leaves 棕榈叶活性炭的炭化、活化及描述
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.139023
Sara M. Younes, Basma M. El Dakiky, Eman R. Sadik
{"title":"Carbonization, Activation and Description of Activated Carbon from Palm Tree Leaves","authors":"Sara M. Younes, Basma M. El Dakiky, Eman R. Sadik","doi":"10.4236/ajac.2022.139023","DOIUrl":"https://doi.org/10.4236/ajac.2022.139023","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500938","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}
引用次数: 1
Visible and Near-Infrared Spectroscopic Discriminant Analysis Applied to Identification of Soy Sauce Adulteration 可见光和近红外光谱判别分析在酱油掺假鉴别中的应用
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.132005
Chunli Fu, Jiemei Chen, Lifang Fang, T. Pan
{"title":"Visible and Near-Infrared Spectroscopic Discriminant Analysis Applied to Identification of Soy Sauce Adulteration","authors":"Chunli Fu, Jiemei Chen, Lifang Fang, T. Pan","doi":"10.4236/ajac.2022.132005","DOIUrl":"https://doi.org/10.4236/ajac.2022.132005","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500402","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}
引用次数: 1
Mass-Spectrometric Method of Measurement of Isotopic Content of Nitrogen in Organic Compounds 有机化合物中氮同位素含量的质谱测定方法
美国分析化学(英文) Pub Date : 2022-01-01 DOI: 10.4236/ajac.2022.135013
L. Parulava, L. Eliashvili, Vakhtang Betlemidze, Natia Mzareulishvili
{"title":"Mass-Spectrometric Method of Measurement of Isotopic Content of Nitrogen in Organic Compounds","authors":"L. Parulava, L. Eliashvili, Vakhtang Betlemidze, Natia Mzareulishvili","doi":"10.4236/ajac.2022.135013","DOIUrl":"https://doi.org/10.4236/ajac.2022.135013","url":null,"abstract":"","PeriodicalId":63216,"journal":{"name":"美国分析化学(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70500572","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}
引用次数: 2
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