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投稿时间：2021-07-22
投稿时间：2021-07-22
中文摘要: 根据铬（Ⅵ）在醋酸介质中对H2O2-溴甲酚绿反应体系具有促进作用，从而建立一种测定鲜虾中铬含量的新方法。通过单因素试验，确定最佳催化体系条件为pH 4.4的HAc-NaAc缓冲溶液5.00 mL，3%的过氧化氢溶液0.10 mL，溴甲酚绿溶液0.40 mL，60℃的恒温水浴加热5 min，测定波长为610 nm。在最优条件下，ΔA与铬浓度线性方程为y=9.982 2x+0.000 4，R2=0.998 9，线性关系良好。t检验结果表明该方法与电感耦合等离子体质谱法（inductively coupled plasma mass spectrometry，ICP-MS）检测结果差异不显著。
中文关键词: 催化动力学光度法 鲜虾 铬 电感耦合等离子体质谱法 t检验
Abstract:According to the catalytic effect of Cr（Ⅵ）on the reaction system of H2O2-bromocresol green in ethylic acid medium，a new method for the determination of chromium in fresh shrimp was established.The best test conditions determined by a single factor test were as follows：5.00 mL HAc-NaAc buffer solution of pH 4.4，0.10 mL 3%hydrogen peroxide solution and 0.40 mL bromocresol green solution，heat 5 min in a content temperature water bath at 60 ℃，wavelength of 610 nm.Under the optimal conditions，the linear equation of ΔA and chromium concentration was y=9.982 2x+0.0004，R2=0.998 9，the linear relationship was satisfactory.The t-test showed that the difference between the results obtained by this method and the inductively coupled plasma mass spectrometry（ICP-MS）detection method was insignificant.
keywords: catalytic kinetic spectrophotometry fresh shrimp chromium inductively coupled plasma mass spectrometry t test
文章编号：202123023 中图分类号： 文献标志码：
基金项目:河南省高等学校重点科研项目（21B550008）
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