|
|
|
| Experimental Study of Potassium Iodide-Rhoda mine B Spectrophotometric Method to Determine Cadmium Content in Wastewater |
| GENG Zhen-xiang, GUO Ya-ping |
| Department of Environmental and Safety Engineering of Taiyuan Institute of Technology,Taiyuan 030008, China |
|
|
|
|
Abstract The potassium iodide-rhoda mine B spectrophotometric method was applied to estimate the cadmium content in waste water. The ternary complex can be formed by Cd2+, potassium iodide and rhoda mine B in acidic conditions. The influences of acidity, developer dosage, developing time and temperature on absorbance were studied. The optimum conditions are the amount of 0.5 mol/L sulphuric acid solution was 5 mL, the concentration of potassium iodide was 6.0 mL, the developing time was 50 min and the temperature was at the room-temperature. Under the optimum conditions, the relative standard deviations of the test results are<5%, and the recoveries of standard addition are in the range of 89.6%~95.7%. For its convenience, low cost and accuracy, this method can be used to estimate the trace cadmium in wastewater.
|
|
|
|
|
|
| [ 1 ] 赵 静,孙海娟,冯叙桥. 食品中重金属镉污染状况及其检测技术研究进展[ J ].食品工业科技,2014,35(16 ):371-376.
[ 2 ] 董维华. 水源中镉含量的测定分析[ J ]. 魅力中国,2014(26 ):217-218.
[ 3 ] 曾 云,覃事栋,姚康康,等. 乙醇-硫酸铵双水相萃取镉-碘化钾-罗丹明B离子缔合物[ J ]. 分析试验室, 2012, 31(4 ):83-85.
[ 4 ] 高连斌,张浩然,梁玉珍. 镉-碘化钾-罗丹明 B-三元络合物光度法测定镉[ J ]. 物化检验-化学分册,2006,42(9 ):719-720.
[ 5 ] 陈文宾,殷 磊,斯琴高娃. 1-(4-安替比林)-3-( 3-硝基苯胺)三氮烯分光光度法测定镉(Ⅱ)[ J ]. 物化检验-化学分册,2011,47(9 ):1 043-1 045.
[ 6 ] 刘 阁,张锦柱. 镉的光度法分析进展[ J ]. 湿法冶金,2005, 24( 3 ):168- 171.
[ 7 ] 王君玲,樊月琴,郭 永,等. 显色剂 2, 5- 二甲氧基- 4- 氯苯基重氮氨基偶氮苯的合成及其与镉显色反应的研究[ J ]. 理化检验- 化学分册,2006,42( 3 ):179- 180.
[ 8 ] 李善忠,陈强军,丁晓杰. 4-(6- 甲氧基- 8- 喹啉偶氮)- 邻苯二酚与 Cd(Ⅱ)分光光度研究与应用[ J ]. 淮海工学院学报,2010,19(2 ):49-51.
[ 9 ] 赵桦萍,赵丽杰,白丽明,等. 5-Br-PADAP-TritonX-100-β-环糊精体系分光光度法测定电镀废水中镉[ J ]. 冶金分析,2007,27(10 ):47-49.
[10] 董学畅,郑永军,郝南明,等. 固相萃取光度法测定环境水样中镉(Ⅱ)的研究[ J ]. 云南大学学报(自然科学版),2005,27(3 ):235-238.
[11] 杨慧仙,李贵荣,何爱桃,等. Cd2+-I-CV三元缔合物共振瑞利散射法测定镉[ J ]. 中国卫生检验杂志,2007,27(8 ):1 366-1 368. |
|
|
|