摘要
采用NaOH-Na2CO3、MgCl2和H3PO4缓冲溶液混合消解体系对铬渣进行处理,建立了铬渣中六价铬的测定方法。结果表明,此方法在0 mg/L^0.200 mg/L范围内线性良好,检出限为0.15 mg/kg（以0.5 g样品计）,铬渣样品的RSD为5.5%,加标回收率为91.7%~106.3%。方法操作较为简便,精密度与准确度均符合要求。
By proceeding chromium residue using the NaOH-Na2CO3,MgCl2 and H3PO4 buffer solution mixed digestion system;we established the determination of hexavalent chromium in chromium residue.Results showed that this method suggested a good linear relationship in the range of 0 mg/L^0.200 mg/L,detection limit is 0.15 mg/kg（taking 0.5g samples into account）.The sample RSD was 5.5% and the recovery rate is 91.7%~106.3%.This method is relatively simple,with its precision and accuracy fulfilled the requirements.
出处
《环境科学与管理》
CAS
2011年第5期152-153,161,共3页
Environmental Science and Management
关键词
铬渣
六价铬测定
混合消解体系
chromium residue
determination of hexavalent chromium
mixed digestion system
