摘要
铬渣加工成－２００目均匀样品，（１＋１０）Ｈ＿３ＰＯ＿４为溶取剂．密封．经０．１２～０．１４ＭＰａ压力，１２１℃高温处理３０ｍｉｎ。此法可溶取铬渣中全量Ｃｒ（Ⅵ）．不影响Ｃｒ（Ⅵ）的价态形式，并可消除Ｆｅ（Ⅲ）对Ｃｒ（Ⅵ）测定的干扰。
The chromium sludge is the solid waste from manufacture of Na_2CrO_4.The sample is processed to 200 mesh and homogenized. The total Cr(Ⅵ)in chromium sludge can be extracted in theextraction condition of 30 min. 1+10 H_3PO_4,sealed,0.12～0.14 MPa, 121℃.
出处
《环境科学研究》
EI
CAS
CSCD
1995年第4期40-42,共3页
Research of Environmental Sciences
关键词
铬渣
铬
溶取
Chromium sludge
Cr(Ⅵ)
Extraction
