悬浮液进样GFAAS法测定食用明胶中的铬
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引文格式院 吴晨曦袁汪亦茗袁陈潍玲. 悬浮液进样GFAAS法测定食用明胶中的铬[J].食品研究与开发袁2019袁40渊 16冤 院124-128 WU Chenxi袁WANG Yiming袁 CHEN Weiling. Determination of Chromium in Edible Gelatin by GFAAS with Suspension Sam原 ple[J]. Food Research and Development袁2019袁40渊 16冤 院124-128
Determination of Chromium in Edible Gelatin by GFAAS with Suspension Sample WU Chenຫໍສະໝຸດ Baiduxi袁 WANG Yi-ming袁 CHEN Wei-ling
渊 The Food and Drug Inspection Test Center of Shengzhou袁 Shengzhou 312400袁 Zhejiang袁 China冤 粤遭泽贼则葬糟贼：The graphite furnace atomic absorption spectrophotometry （GFAAS）coupled with the suspension injection method was established to determine the chromium in the edible gelatin. During suspension preparing， the effects of gelatin particle size，the amount of surfactant，and the ratio of sample weight to constant volume on the detection results were studied. The choice of matrix modifier was discussed，the heating program of GFAAS was optimized. The studies showed that addition of a surfactant was not necessary，when the constant volume was 10 mL，the suspension prepared by weighing 0.30 g-0.35 g gelatin with particle size less than 0.15 mm was most suitable for detection. Magnesium nitrate was selected as the matrix modifier，the optimal detection condition of GFAAS with the ashing temperature of 1 500 益 and atomization temperature of 2 200 益. Under the optimal conditions，the method detection limit was 0.001 mg/kg，the relative standard deviation of the test was less than 5 %，the recoveries were between 95 % and 115 %. The method was simple，effective and rapid for the determination of chromium in edible gelatin. 运藻赠 憎燥则凿泽：edible gelatin；suspension；graphite furnace atomic absorption spectrophotometry；chromium； matrix modifier
圆园19 年 8 月
124 第 40 卷第 16 期
DOI院10.12161/j.issn.1005-6521.2019.16.023
食品研究与开发
云ood Research And Development
检测分析
悬浮液进样GFAAS法测定食用明胶中的铬
吴晨曦，汪亦茗，陈潍玲 渊 嵊州市食品药品检验检测中心袁浙江 嵊州 312400冤
食用明胶作为食品添加剂以及空心胶囊的主要 原料被广泛应用于食品和药品中遥 我国食品卫生标准[1]
作者简介院吴晨曦渊 1987要冤 袁男渊 汉冤 袁工程师袁硕士袁主要从事食品药品 检验和质量标准的研究工作遥
和药典[2]对食用明胶中铬元素均有限量要求遥 检测明 胶中铬所采取的前处理方法通常有干法消解袁湿法消 解和微波消解[3]遥 但是袁这些方法通常存在污染环境和 耗时长的缺点遥 若明胶不经过消解袁直接配置成悬浮 液后检测就可以避免上述问题[4]遥
摘 要：为建立悬浮液直接进样-石墨炉原子吸收光谱法渊 graphite furnace atomic absorption spectrophotometry袁GFAAS冤 测定食用明胶中铬的方法袁研究配置悬浮液过程中袁明胶颗粒大小袁表面活性剂的用量以及取样量与定容体积比对检 测结果的影响遥讨论基体改进剂的选择袁优化石墨炉原子吸收光谱仪的升温程序遥研究表明袁不必加入表面活性剂袁当 定容体积为 10 mL 时袁称取 0.30 g耀0.35 g 粒径小于 0.15 mm 的明胶颗粒所配置的悬浮液最适于检测遥选择硝酸镁作 为基体改进剂袁仪器最佳检测条件为灰化温度 1 500 益袁原子化温度 2 200 益遥在此条件下袁方法检出限为 0.001 mg/kg袁试 验的相对标准偏差在 5 %以下袁加标回收率在 95 %到 115 %之间遥该方法能够简单尧有效并快速地进行食用明胶中铬 的检测遥 关键词：明胶曰悬浮液进样曰石墨管原子吸收光谱法曰铬曰基体改进剂
Determination of Chromium in Edible Gelatin by GFAAS with Suspension Sample WU Chenຫໍສະໝຸດ Baiduxi袁 WANG Yi-ming袁 CHEN Wei-ling
渊 The Food and Drug Inspection Test Center of Shengzhou袁 Shengzhou 312400袁 Zhejiang袁 China冤 粤遭泽贼则葬糟贼：The graphite furnace atomic absorption spectrophotometry （GFAAS）coupled with the suspension injection method was established to determine the chromium in the edible gelatin. During suspension preparing， the effects of gelatin particle size，the amount of surfactant，and the ratio of sample weight to constant volume on the detection results were studied. The choice of matrix modifier was discussed，the heating program of GFAAS was optimized. The studies showed that addition of a surfactant was not necessary，when the constant volume was 10 mL，the suspension prepared by weighing 0.30 g-0.35 g gelatin with particle size less than 0.15 mm was most suitable for detection. Magnesium nitrate was selected as the matrix modifier，the optimal detection condition of GFAAS with the ashing temperature of 1 500 益 and atomization temperature of 2 200 益. Under the optimal conditions，the method detection limit was 0.001 mg/kg，the relative standard deviation of the test was less than 5 %，the recoveries were between 95 % and 115 %. The method was simple，effective and rapid for the determination of chromium in edible gelatin. 运藻赠 憎燥则凿泽：edible gelatin；suspension；graphite furnace atomic absorption spectrophotometry；chromium； matrix modifier
圆园19 年 8 月
124 第 40 卷第 16 期
DOI院10.12161/j.issn.1005-6521.2019.16.023
食品研究与开发
云ood Research And Development
检测分析
悬浮液进样GFAAS法测定食用明胶中的铬
吴晨曦，汪亦茗，陈潍玲 渊 嵊州市食品药品检验检测中心袁浙江 嵊州 312400冤
食用明胶作为食品添加剂以及空心胶囊的主要 原料被广泛应用于食品和药品中遥 我国食品卫生标准[1]
作者简介院吴晨曦渊 1987要冤 袁男渊 汉冤 袁工程师袁硕士袁主要从事食品药品 检验和质量标准的研究工作遥
和药典[2]对食用明胶中铬元素均有限量要求遥 检测明 胶中铬所采取的前处理方法通常有干法消解袁湿法消 解和微波消解[3]遥 但是袁这些方法通常存在污染环境和 耗时长的缺点遥 若明胶不经过消解袁直接配置成悬浮 液后检测就可以避免上述问题[4]遥
摘 要：为建立悬浮液直接进样-石墨炉原子吸收光谱法渊 graphite furnace atomic absorption spectrophotometry袁GFAAS冤 测定食用明胶中铬的方法袁研究配置悬浮液过程中袁明胶颗粒大小袁表面活性剂的用量以及取样量与定容体积比对检 测结果的影响遥讨论基体改进剂的选择袁优化石墨炉原子吸收光谱仪的升温程序遥研究表明袁不必加入表面活性剂袁当 定容体积为 10 mL 时袁称取 0.30 g耀0.35 g 粒径小于 0.15 mm 的明胶颗粒所配置的悬浮液最适于检测遥选择硝酸镁作 为基体改进剂袁仪器最佳检测条件为灰化温度 1 500 益袁原子化温度 2 200 益遥在此条件下袁方法检出限为 0.001 mg/kg袁试 验的相对标准偏差在 5 %以下袁加标回收率在 95 %到 115 %之间遥该方法能够简单尧有效并快速地进行食用明胶中铬 的检测遥 关键词：明胶曰悬浮液进样曰石墨管原子吸收光谱法曰铬曰基体改进剂