Sodium thiosulphate and neutron activation determinaion of iodine content in samples of 18 Sargassum species collected in Guangdong and Guangxi Devince in April 1996 shawed large differences (0.47 × 10-3 in Sarga...Sodium thiosulphate and neutron activation determinaion of iodine content in samples of 18 Sargassum species collected in Guangdong and Guangxi Devince in April 1996 shawed large differences (0.47 × 10-3 in Sargassum hemiphyllum, 0.56 × 10-3 in Sargassum assimile, and 4.5 × 10-3 in Sargassum vachellianum). Traditional titration analysis and neutron activation analysis for determination of total iodine yielded similar results showing that certain Sargassum species had high capacity to accumulate iodine.展开更多
目的采用电感耦合等离子质谱法(inductively coupled plasma mass spectrometry,ICP-MS)测定并分析不同产地昆布和海藻饮片及配方颗粒的碘含量。方法采用浓硝酸对昆布和海藻饮片及配方颗粒样品进行消解,并在冷却后以氨水为介质定容。以R...目的采用电感耦合等离子质谱法(inductively coupled plasma mass spectrometry,ICP-MS)测定并分析不同产地昆布和海藻饮片及配方颗粒的碘含量。方法采用浓硝酸对昆布和海藻饮片及配方颗粒样品进行消解,并在冷却后以氨水为介质定容。以Rh元素为内标,以海带-茶叶中碘成分分析标准物质作为标准物质,采用ICP-MS法测定6个产地的昆布饮片、5个产地的海藻饮片和3个厂家的昆布和海藻颗粒的碘含量。结果碘元素的检出限为0.00231μg/mL,加样回收率为93.72%~109.77%,均RSD<10%。昆布和海藻饮片的碘含量分别为(855.33±21.73)μg/g~(5481.33±157.62)μg/g和(297.67±8.39)μg/g~682.67±33.08)μg/g;昆布和海藻配方颗粒的碘含量分别为(3139.33±136.27)μg/g~(16165.00±727.60)μg/g和(611.00±7.81)μg/g~(3141.00±73.32)μg/g。结论不同产地和厂家的昆布、海藻饮片及配方颗粒的碘含量不同,且在同种剂型下,昆布的碘含量高于海藻。采用ICP-MS法检测不同来源、不同剂型的昆布和海藻的碘含量可为指导临床科学应用富碘中药、完善昆布和海藻饮片与配方颗粒的质量评价提供实验依据。展开更多
文摘Sodium thiosulphate and neutron activation determinaion of iodine content in samples of 18 Sargassum species collected in Guangdong and Guangxi Devince in April 1996 shawed large differences (0.47 × 10-3 in Sargassum hemiphyllum, 0.56 × 10-3 in Sargassum assimile, and 4.5 × 10-3 in Sargassum vachellianum). Traditional titration analysis and neutron activation analysis for determination of total iodine yielded similar results showing that certain Sargassum species had high capacity to accumulate iodine.
文摘目的采用电感耦合等离子质谱法(inductively coupled plasma mass spectrometry,ICP-MS)测定并分析不同产地昆布和海藻饮片及配方颗粒的碘含量。方法采用浓硝酸对昆布和海藻饮片及配方颗粒样品进行消解,并在冷却后以氨水为介质定容。以Rh元素为内标,以海带-茶叶中碘成分分析标准物质作为标准物质,采用ICP-MS法测定6个产地的昆布饮片、5个产地的海藻饮片和3个厂家的昆布和海藻颗粒的碘含量。结果碘元素的检出限为0.00231μg/mL,加样回收率为93.72%~109.77%,均RSD<10%。昆布和海藻饮片的碘含量分别为(855.33±21.73)μg/g~(5481.33±157.62)μg/g和(297.67±8.39)μg/g~682.67±33.08)μg/g;昆布和海藻配方颗粒的碘含量分别为(3139.33±136.27)μg/g~(16165.00±727.60)μg/g和(611.00±7.81)μg/g~(3141.00±73.32)μg/g。结论不同产地和厂家的昆布、海藻饮片及配方颗粒的碘含量不同,且在同种剂型下,昆布的碘含量高于海藻。采用ICP-MS法检测不同来源、不同剂型的昆布和海藻的碘含量可为指导临床科学应用富碘中药、完善昆布和海藻饮片与配方颗粒的质量评价提供实验依据。
