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首页> 美国政府科技报告 >Fractionation of Natural Organic Matter in Water from the Red River and the Moorhead Water Tretament Plant, Minnesota Using a Novel Solid Phase Extraction Technique. Technical Report NO: ND-08-03
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Fractionation of Natural Organic Matter in Water from the Red River and the Moorhead Water Tretament Plant, Minnesota Using a Novel Solid Phase Extraction Technique. Technical Report NO: ND-08-03

机译：采用新型固相萃取技术从明尼苏达红河和moorhead水处理厂分离水中天然有机物。技术报告编号：ND-08-03

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摘要

For the first time, natural organic matter (NOM) in the Red River, MN (RRNOM) and water from the Moorhead Water Treatment Plant (MWTP) were separated into six fractions: hydrophobic acid, hydrophobic base, hydrophobic neutral, hydrophilic acid, hydrophilic base, and hydrophilic neutral. A novel NOM fractionation technique using a series of solid phase extraction cartridges (three Bond Elute ENV cartridges, one StrataX-C cartridge, and one StrataX-AW cartridge) was used. The technique requires only 6 hours of fractionation time, which is much faster than traditional fractionation techniques (24 hours). Hydrophobic acid and hydrophilic neutral were the two major fractions accounted for 36% and 25% of RRNOM, respectively. The six NOM fractions of RRNOM were further characterized using Fourier transformed infrared spectroscopy and solid state 13C nuclear magnetic resonance spectroscopy. The hydrophobic acid and hydrophilic neutral fractions contained mainly carboxylic acids and primary amines, respectively. The fractionation results of finished water at MWTP revealed that hydrophilic neutral fraction was the highest (45% of NOM). This study provides valuable information on NOM composition in the Red River water and efficiencies of treatment units at MWTP for removal of different NOM fractions. With this information, appropriate operational adjustments on treatment processes can be made to minimize problematic NOM fractions that deteriorate drinking water quality.

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