使用XAD对五种水源中的天然有机物（NOM）进行了分离 树脂和超滤膜的疏水性和分子量不同 （MW）组。消毒过程中各部分产生的消毒副产物（DBP） 研究了氯化和氯胺化反应。在使用氯化、疏水和 高分子量（例如>3kDa）的前体会产生更多的三卤甲烷（THM）、三卤乙酸 THAA）酸和未知总有机卤素（UTOX）比相应的 亲透明、亲水和低分子量（例如<3kDa）前体。然而，形成 对于低腐殖酸水，不同组分的THMs和THAA相似 所容纳之物亲水性和分子量<0.5k的馏分的二卤乙酸产率最高。 二卤乙酸和UTOX的形成没有发现显著差异 氯胺化过程中不同组分之间的相互作用。看来氯胺化DBP 前驱体在NOM馏分中分布更均匀。高pH值有利于 在UTOX上形成THM和HAAs。pH值升高也会降低TOX 形成疏水性和高分子量组分，但对TOX产率影响不大 由亲水性和低分子量组成。溴和碘的含量更高 与THM和HAA测定的亲水性和低分子量组分反应 形成比它们相应的疏水性和高分子量组分。 然而 疏水性和高分子量的馏分在与溴反应时产生更多的UTOX 还有碘。包括39个参考文献、表格和图表。

Natural organic matter (NOM) from five water sources was fractionated using XAD resins and ultrafiltration membranes into different hydrophobicity and molecular weight (MW) groups. The disinfection byproduct (DBP) formation from each fraction during chlorination and chloramination was studied. In tests using chlorination, hydrophobic and high MW (e.g. >3kDa) precursors produced more trihalomethanes (THMs), trihaloacetic THAA) acids and unknown total organic halogen (UTOX) than corresponding transphilic, hydrophilic and low MW (e.g. <3kDa) precursors. However, the formation of THMs and THAA was similar among different fractions for a water with low humic content. Hydrophilic and MW<0.5k fractions gave the highest dihaloacetic acid yields. No significant difference was found for the dihaloacetic acid and UTOX formation among different fractions during chloramination. It appears that chloramination DBP precursors are more evenly distributed among NOM fractions. High pH favors the formation of THMs and HAAs over UTOX. Increasing pH also led to lower TOX formation for hydrophobic and high MW fractions, but had little impact on TOX yields from hydrophilic and low MW fraction. Bromine and iodine were found to be more reactive with hydrophilic and low MW fractions as measured by THM and HAA formation than their corresponding hydrophobic and high MW fractions. However, hydrophobic and high MW fractions produced more UTOX when reacting with bromine and iodine. Includes 39 references, tables, figures.