食品添加剂硫酸镍的制备工艺研究  

Preparation of Nickel Sulfate as Food Additive

作　　者：王梦娇[1] 李义久[1] 相波[1] 郑琦 顾小焱[2] 凌芳 

机构地区：[1]同济大学化学系,上海200092 [2]国药集团化学试剂有限公司,上海200002

出　　处：《化学试剂》2014年第3期259-261,共3页Chemical Reagents

基　　金：上海市科委“科技创新行动计划”化学试剂研究资助项目(11142200600)

摘　　要：以工业级硫酸镍为原料，先通过生成砷酸盐沉淀的方式去除杂质砷，再加入硫化钠以硫化物共沉淀方式去除铅、镉、汞及残余砷等杂质。结果表明：在pH5，硫化钠投加量为理论值的6倍，反应温度为40—50℃，反应时间1h的条件下，4种杂质得到有效去除。经ICP-MS法检测，产品达到美国FCC食品化学药典标准。In this work, industrial grade nickel sulfate was used as raw material. Arsenic was removed by forming Arse- nate precipitate firstly. Then heavy metal inos of lead, cadmi- um, mercury and residual arsenic were removed by co-precipi- tation via adding sodium sulfide. The impurities can be effec- tively removed when pH 5,sodium sulfide addition is 6 times of the theoretical value, the reaction temperature is 40 - 50 ℃ and time is 1 h. The products meet the standard of american food chemicals codex.

关 键 词：食品添加剂 硫酸镍 沉淀与共沉淀 重金属杂质 

分 类 号：O614.81[理学—无机化学]