本文選題：腐殖質(zhì) + 腐殖酸��； 參考：《熱帶海洋學(xué)報(bào)》2016年04期

【摘要】：近海沉積物中腐殖質(zhì)和腐殖酸對(duì)海洋環(huán)境污染具有一定的指示作用,其對(duì)重金屬、持久性有機(jī)污染物的遷移轉(zhuǎn)化具有較大的影響。文章采用焦磷酸鈉-氫氧化鈉提取重鉻酸鉀氧化容量法對(duì)沉積物腐殖質(zhì)的組成進(jìn)行測(cè)定,Na OH堿提取法對(duì)沉積物腐殖酸進(jìn)行提取,使用元素分析、紫外光譜、傅里葉變換紅外光譜(FTIR)等方法對(duì)提取的腐殖酸進(jìn)行表征。研究結(jié)果表明:雷州半島近海表層沉積物腐殖質(zhì)含量較低,在0.26%~2.36%之間,平均值1.49%,其中富里酸占51%,胡敏素占35%,胡敏酸占14%,腐殖酸占整個(gè)腐殖質(zhì)的比例是65%。柱狀沉積物腐殖化程度高于表層沉積物。雷州半島近海沉積物中腐殖酸以富里酸和小分子有機(jī)物為主,碳含量高,硫含量低,具有苯環(huán)、羧基、醇羥基、酚羥基、羰基及氨基等官能團(tuán),腐殖化程度不高。研究結(jié)果將為雷州半島沿海經(jīng)濟(jì)的開(kāi)發(fā)和環(huán)境保護(hù)提供一定的指導(dǎo)意義。
[Abstract]:The humus and humic acid in offshore sediments have a certain indicative effect on marine environmental pollution, and they have great influence on the migration and transformation of heavy metals and persistent organic pollutants. The composition of humus in sediment was determined by sodium pyrophosphate and sodium hydroxide extraction potassium dichromate oxidation volumetric method. The humic acid in sediment was extracted by NaOH base extraction method. Element analysis and UV spectrum were used. The extracted humic acid was characterized by Fourier transform infrared spectroscopy (FTIR) and other methods. The results show that the content of humus in surface sediments of Leizhou Peninsula is relatively low, ranging from 0.26% to 2.36%, with an average value of 1.49. among them, fulvic acid accounts for 51%, humic acid for 35%, Hu Min acid for 14%, and humic acid for 65% of the total humus. The humification degree of columnar sediments was higher than that of surface sediments. In the coastal sediments of Leizhou Peninsula, the humic acid is mainly composed of fulvic acid and small molecular organic compounds, with high carbon content and low sulfur content, with functional groups such as benzene ring, carboxyl group, alcohol hydroxyl group, phenolic hydroxyl group, carbonyl group and amino group, and the degree of humification is not high. The results will provide some guidance for the development of coastal economy and environmental protection of Leizhou Peninsula.
【作者單位】： 廣東海洋大學(xué)海洋資源與環(huán)境監(jiān)測(cè)中心;華南理工大學(xué)環(huán)境與能源學(xué)院;
【基金】：海洋公益性行業(yè)科研專(zhuān)項(xiàng)經(jīng)費(fèi)(201305038-6) 廣東省科技計(jì)劃項(xiàng)目(2013B021600015)~~
【分類(lèi)號(hào)】：P736.21

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