烟草科技2016，Vol.49Issue(2)：36-41,6.
不同工艺的树苔提取物中As的总量和形态
Concentrations and speciation of arsenic in tree moss extracts produced by different technologies
摘要
Abstract
In order to study the effects of different extraction technologies on the arsenic measured in tree moss extracts, ICP-MS and RP-HPLC-ICP-MS were used to analyze the concentrations and species of arsenic. The results showed that: 1) The conventional procedures of alcohol re-extraction and freezing separation decreased the arsenic concentration by 37% to 49%. 2) AsC (Arsenocholine) was not detected in all the tree moss extracts extracted by different solvents. As(Ⅲ) and DMA (Dimethylarsenic acid) were the main arsenic species in the tree moss extracts extracted by alcohol, alcohol/propylene glycol and sub-critical butane, whileas As(Ⅴ) and DMA were the main species in those extracted by water. 3) After alcohol re-extraction and/or freezing separation, the proportions of arsenic species did not changed greatly, however the total arsenic decreased in the tree moss extracts extracted by alcohol and alcohol/propylene glycol. The concentration of As(Ⅴ) decreased much more than that of As(Ⅲ) and DMA in tree moss extracts extracted by water, which indicated that the solubility of As(Ⅲ) and DMA in alcohol was higher than that of As(Ⅴ).关键词
树苔提取物/砷(As)/形态分析/反相高效液相色谱-电感耦合等离子体质谱(RP-HPLC-ICP-MS)/生产工艺Key words
Tree moss extract/Arsenic (As)/Speciation analysis/Reversed phase-high performance liquid chromatography-inductively coupled plasma mass spectrometry (RP-HPLC-ICP-MS)/Production technology分类
化学化工引用本文复制引用
杨伟平,朱琦,张东豫,徐秀娟,霍现宽,姬凌波,屈展,何保江..不同工艺的树苔提取物中As的总量和形态[J].烟草科技,2016,49(2):36-41,6.基金项目
中国烟草总公司郑州烟草研究院院长基金项目"天然香料中砷的去除方法研究及应用"(422013CA0310). （422013CA0310）
