Tropical peat water dissolved organic matter (DOM) fractions spectral parameters correlate with the formation of carcinogenic disinfection by-products (DBPs), haloacetic acids (HAAs). Peat water DOM has been fractionated using Superlite DAX-8, Amberlite XAD-4, and Amberlite IRA-958 resins to separate hydrophobic acid (HPOA), transphilic (TPH), hydrophilic-charged (HPIC), and hydrophilic-neutral (HPIN). The formation potential of HAA was determined using the total concentration of 5 HAAs (HAA5). The DOM characteristic was determined using dissolved organic carbon (DOC) and ultraviolet–visible (UV–Vis) absorbance was evaluated at 200–700 nm. The HPOA fraction dominates the DOM of tropical peat water with a 40% DOC concentration when the HPIC fraction was the slighter. The spectral absorbance ratios (E₄/E₆ and A₂₅₃/A₂₀₃) and spectral slopes (S_206–213, S_251–280, S_281–295, and S_>295) have a strong positive correlation with HAA5 formation potential (HAA5FP). Similarly, the absorbance ratio A₂₁₀/A₂₅₄ and spectral slopes S_200–205 are strongly correlated to HAA5FP, but in a negative direction. In contrast, the E₂/E₃ and A₂₈₀/A₃₅₀ spectral ratio, and spectral slopes (S_214-227, and S_228–250), has a weaker correlation with HAA5FP. The E₂/E₃ and A₂₈₀/A₃₅₀ ratios and S_251–280 S_200–205 spectral slope show a strong relationship with the brominated HAA5FP (B-HAA5FP). The spectral parameters of DOM fractions can be used as surrogate parameters of HAA5FP of peat water.

热带泥炭水溶解有机物 (DOM) 部分光谱参数与致癌消毒副产物 (DBP)、卤代乙酸 (HAA) 的形成相关。泥炭水 DOM 已使用 Superlite DAX-8、Amberlite XAD-4 和 Amberlite IRA-958 树脂进行分馏，以分离疏水酸 (HPOA)、反式 (TPH)、亲水电荷 (HPIC) 和亲水中性 (HPIN) . 使用 5 种 HAA (HAA5) 的总浓度确定 HAA 的形成潜力。使用溶解有机碳 (DOC) 确定 DOM 特性，并在 200-700 nm 处评估紫外-可见 (UV-Vis) 吸光度。当 HPIC 部分较轻时，HPOA 部分在热带泥炭水的 DOM 中占主导地位，DOC 浓度为 40%。光谱吸光度比 (E ₄ /E₆和 A ₂₅₃ /A ₂₀₃）和光谱斜率（S _206–213、S _251–280、S _281–295和 S _>295）与 HAA5 形成潜力（HAA5FP）具有很强的正相关。类似地，吸光度比 A ₂₁₀ /A ₂₅₄和光谱斜率 S _200-205与_HAA5FP密切相关，但呈负方向。相比之下，E ₂ /E ₃和A ₂₈₀ /A ₃₅₀光谱比和光谱斜率（S _214-227和S _228-250）与HAA5FP 的相关性较弱。E₂ /E ₃和 A ₂₈₀ /A ₃₅₀比值和 S _251–280 S _200–205光谱斜率显示出与溴化 HAA5FP (B-HAA5FP) 的密切关系。DOM 组分的光谱参数可用作泥炭水 HAA5FP 的替代参数。