It was shown that a new sensitive spectrophotometric method for the determination oftrace arsenic with chlorpromazine by the formation of heteropoly arsenomolybdic chlorpromazinecomplex in aqueous phase.
A method was developed for the determination of trace arsenic by spectrophotometry. The proposed method is rapid, simple, and inexpensive. This method can be used for sensitive determination of trace arsenic in enviro...A method was developed for the determination of trace arsenic by spectrophotometry. The proposed method is rapid, simple, and inexpensive. This method can be used for sensitive determination of trace arsenic in environmental samples and especially in air particulates. The results obtained by this method as a proposed method were compared with those obtained by hydride generation atomic absorption spectrometry as a popular reported method for the determination of arsenic and an excellent agreement was found between them. The method was also used for determination of arsenic associated with airborne particulate matter and diesel exhaust particulates. The results showed that considerable amount of arsenic are associated with diesel engine particulates. The variation in concentration of arsenic was also investigated. The atmospheric concentration of arsenic was different in different sampling stations was dependent to the traffic density.展开更多
The method is based on the oxidation of chlorpromazine with ammonium metavanadate in pH 2.4 solution, the absorbance of coloured compound was measured at 530 nm. Calibration graphs are linear over the concentration r...The method is based on the oxidation of chlorpromazine with ammonium metavanadate in pH 2.4 solution, the absorbance of coloured compound was measured at 530 nm. Calibration graphs are linear over the concentration range 0 to approximately 250 mu g/mL. The apparent molar absorptivity was 1.28 multiplied by 10**3 L center dot mol** minus **1 center dot cm** minus **1. The proposed method was applied to the determination of chlorpromazine tablets with satisfactory results. (Author abstract) 4 Refs.展开更多
文摘It was shown that a new sensitive spectrophotometric method for the determination oftrace arsenic with chlorpromazine by the formation of heteropoly arsenomolybdic chlorpromazinecomplex in aqueous phase.
文摘A method was developed for the determination of trace arsenic by spectrophotometry. The proposed method is rapid, simple, and inexpensive. This method can be used for sensitive determination of trace arsenic in environmental samples and especially in air particulates. The results obtained by this method as a proposed method were compared with those obtained by hydride generation atomic absorption spectrometry as a popular reported method for the determination of arsenic and an excellent agreement was found between them. The method was also used for determination of arsenic associated with airborne particulate matter and diesel exhaust particulates. The results showed that considerable amount of arsenic are associated with diesel engine particulates. The variation in concentration of arsenic was also investigated. The atmospheric concentration of arsenic was different in different sampling stations was dependent to the traffic density.
文摘The method is based on the oxidation of chlorpromazine with ammonium metavanadate in pH 2.4 solution, the absorbance of coloured compound was measured at 530 nm. Calibration graphs are linear over the concentration range 0 to approximately 250 mu g/mL. The apparent molar absorptivity was 1.28 multiplied by 10**3 L center dot mol** minus **1 center dot cm** minus **1. The proposed method was applied to the determination of chlorpromazine tablets with satisfactory results. (Author abstract) 4 Refs.
文摘为对我国环境保护与控制提供技术支持,进一步完善固体废物中重点参数,本文对HJ 702—2014《固体废物砷、汞、硒、铋、锑的测定微波消解/原子荧光法》中砷的测定进行6个方面的验证:线性关系、方法检出限、测定下限、精密度、准确度和实际样品加标回收率。结果表明,线性关系达到0.9998;当称取0.5 g固体废物样品验证砷(全量)时,测得0.009μg/g检出限、0.036μg/g的测定下限,当移取40 m L固体废物浸出液验证砷(浸出液)时,测得0.08μg/L的检出限、0.32μg/L的测定下限;砷(全量)、砷(浸出液)的相对标准偏差分别为0.35%~1.0%、1.2%~2.9%;实验室砷(全量)有证标准物质相对误差分别为-4.6%~0.85%,砷(浸出液)标准浓度的相对误差分别为0.25%~3.0%;固体废物砷(全量)加标回收率分别为93.7%~97.5%,固体废物砷(浸出液)加标回收率分别为96.0%~98.1%。各项指标均满足标准方法要求,证实实验室具备原子荧光光度法测定固体废物中砷的试验条件和技术能力。
