CAJ | 학술논문

铅精粉试样经硫酸、硝酸溶解,在1.5%的硫酸介质中,分取双份试样,其中一份加入适当的还原剂使五价砷还原为三价砷后加入混合显色剂显色磷,另一份加入等体积混合显色剂,实现砷磷合量的测定。小体积直接比色,砷磷合量的吸光度减去磷的吸光度就为砷的吸光度,通过绘制砷的标准曲线从而实现砷的测定。
연정분시양경류산、초산용해,재1.5%적류산개질중,분취쌍빈시양,기중일빈가입괄당적환원제사오개신환원위삼개신후가입혼합현색제현색린,령일빈가입등체적혼합현색제,실현신린합량적측정。소체적직접비색,신린합량적흡광도감거린적흡광도취위신적흡광도,통과회제신적표준곡선종이실현신적측정。
Leading powder sample dissolved in sulfuric acid nitric,1.5 % sulfuric acid medium,took the double sample.One to add the appropriate reductant,pentavalent arsenic reduction to trivalent arsenic then add to mixed color reagent chromogenic phosphorus;Another sample add an equal volume of mixed color reagent,chromogenic arsenic phosphorus levels of total.Small volume of direct colorimetric,total absorbance minus the absorbance of the phosphorus,according to the standard curve of arsenic arsenic results.