【摘要】 本文叙述了用铬酸盐光度法测定硬脂酸钙中微量铅的方法,与一般双硫腙光度法测铅的方法相比,勿须使用有剧毒性的氰化钾溶液,操作安全。我们用此方法测定了进口及国产硬脂酸钙中的铅含量,取得了较好的效果。更多还原

【Abstract】 This paper introduces chromate photometric method of determination for micro lead in Calcium stearate. The Method isn’t the same as ordinary dithizone photometric measurement of lead,Violent toxic potassium cyanide won’t be used. It is safe in operation . We have determined lead in Home-and Abroad-macle Calcium stearate. Some satisfactory results have been gained.更多还原