Fractionation and characterization of DOM and the THMFP feature in the South-China source water
Fractionation and characterization of DOM and the THMFP feature in the South-China source water
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发表时间：
2006
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通讯作者：
Chunguang Qiao
中科院分区：
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作者：
Chunguang Qiao
用树脂吸附方法对中国南部天然水中DOM进行表征和分级，结果表明，DOM的基本组成特征在一个季节内没有明显变化，但总DOM和单组分的含量在一定范围内会随时间变化。疏水酸(HoA)和亲水性物质(HIM)的含量始终高于其他组分。结果表明，DOM中的前驱体主要为疏水和弱疏水组分，最高可达80%。THMS产率较高的馏分为HON(疏水中性组分)、HoA(弱疏水酸)和WOW(弱疏水酸)，符合Suva的性质(100×UV_254/DOC)。但WAW组分具有THMS产率高于紫外光吸收的特殊性质，苏瓦不能绝对作为THMFP的替代指示剂，应引起更多关注。
Characterization and fractionation of DOM from South-China natural water by resin adsorption method showed that the basic fractional character of DOM didn't change significantly in a season although the amount of total DOM and the single fraction would vary with time in a limited range. The amount of the hydrophobic acids (HoA) and the hydrophilic matter (HiM) was relatively higher all the time than the other fractions. The trihalomethane formation potential (THMFP) was studied and the result showed that the main precursors in the DOM were hydrophobic and weakly hydrophobic fractions, up to 80%. It was also found that fractions which had higher THMs yield ability were HoN(hydrophobic neutrals), HoA and WHoA(weakly hydrophobic acids), corresponding with the character of SUVA(which is 100×UV_ 254/DOC). But the WHoA fraction had a special character that its THMs yield ability was super than that of UV absorption, so SUVA couldn't be surrogate indicator for THMFP absolutely.So it was with HiM and needed to pay more attention.