碱消解-火焰原子吸收分光光度法测定固体废物中六价铬的干扰消除试验研究被引量：5

Chromium in Solid Waste by Alkaline Digestion-Atomic Absorption Spectrometry

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摘要测定固体废物实际样品中的六价铬时,往往存在着三价铬的干扰。利用传统的酸消解前处理无法有效地去除三价铬的干扰。运用碱消解前处理虽然可以消除三价铬的干扰,但由于前处理过程中,溶出液有色且基本为黄色,对二苯碳酰二肼分光光度法造成较大干扰。故建立碱消解-火焰原子吸收分光光度法,本方法不仅解决了三价铬的干扰,并避免了溶出液对测定结果造成的误差。 Trivalent chromium often interfere the determination of hexavalent chromium in solid waste sample. This interfer- ence could not be removed effectively using traditional acid digestion pre - treatment. Although it could be eliminated by alkaline digestion, the eluate is yellow, influencing diphenylcarbazide spectrometry greatly. This paper established the method of alkaline digestion- atomic absorption spectrometry. This method not only resolved the trivalent chromium interference, but also avoided the errors caused by the eluate.

作者王琳周勤马微季蕴佳朱林珍

机构地区上海市环境监测中心

出处《环境科学与管理》 CAS 2013年第6期169-171,共3页 Environmental Science and Management

关键词固体废物六价铬碱消解火焰原子吸收分光光度法三价铬干扰 solid waste hexavalent chromium alkaline digestion atomic absorption spectrometry trivalent chromium inter- ference

分类号 X705 [环境科学与工程—环境工程]

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