三峡大学学报（自然科学版）2013，Vol.35Issue(1)：85-87,95,4.
密闭高温高压消解-石墨炉原子吸收光谱法测定胶囊中痕量铬
Determination of Trace Chromium in Capsules by High Temperature High Pressure Sealed Vessels Assisted Digestion and GFAAS
摘要
Abstract
The nitric acid and hydrofluoric acid are chosen for mixed acid and digestion capsules by sealed vessels under the high temperature and high pressure conditions to study the method that determine trace chromium by GFAAS. The optimum time of digestion under 180℃ is studied. Under the optimum analysis condition, determination of trace chromium in capsules by high pressure sealed vessels assisted digestion and GFAAS has a good linear relation; the quadratic regression equation correlation coefficient is 0. 995. Through the interference experiment, it is found that this method can satisfy the requirement of anti- interference performance. The detection limit and LOQ of this method is 0. 274μg/L and 0. 913μg/L; the relative standard deviation of results is 2. 6% ; the recovery is in the range of 98. 700% to 102. 000%. This method can be used to determine trace chromium of capsules, and it has a clear superiority when detecting large batches of samples.关键词
高压密闭法消解/石墨炉原子吸收光谱法/胶囊/铬Key words
high temperature high pressure sealed vessels assisted digestion/graphite furnace atomic absorption spectrometry/capsules/chromium分类
化学化工引用本文复制引用
郭强,王飞,马志超,黄燕,方艳芬,黄应平..密闭高温高压消解-石墨炉原子吸收光谱法测定胶囊中痕量铬[J].三峡大学学报（自然科学版）,2013,35(1):85-87,95,4.基金项目
湖北省高等学校优秀中青年科技创新团队计划资助项目(T200703) （T200703）
湖北省新世纪人才人选人员优先资助项目(KJ2011B074) （KJ2011B074）
三峡大学人才科研启动基金(KJ2011B074) （KJ2011B074）
三峡大学青年科学基金 （）
