摘要
建立了以氧化镁为脱色剂,按GB 7467—1987标准测定深色制革废水中Cr(Ⅵ)含量的方法。实验表明:深色废水脱色率可达90%以上,Cr(Ⅵ)吸附率小于4%,当50 mL溶液中Cr(Ⅵ)质量在8.306～41.53μg时,回归方程m=0.834 3+20.32ΔA(r=0.999 9)。样品加标回收率为92.4%～97.6%,相对标准偏差为2.15%～4.37%。
An analytical method of the determination of Cr（Ⅵ ）-content in deeply-dyed tannery wastewater with magnesia according to GB 7467--1987 has been established. The results show that the decolorization rate of deeplydyed tannery wastewater reaches over 90% and the adsorption rate of Cr（ Ⅵ ） is below 4%. Within the Cr（Ⅵ） mass range of 8.306-41.53 μg in 50 mL of solution, the linear regression equation is m=0.834 3＋20.32 ΔA （r=0.999 9 ）. The recovery rate of the labelled sample is 92.4%-97.6% and the RSD is 2.15%-4.37%.
出处
《工业水处理》
CAS
CSCD
北大核心
2008年第3期67-69,共3页
Industrial Water Treatment
基金
国家973计划前期研究专项资助项目(2007CB616909)
关键词
氧化镁
脱色
六价铬
制革废水
magnesia
decolorization
chromium（Ⅵ ）
tannery wastewater
