Complexation of Heavy Metals by Humic Substances in Sediments from the Polluted Erhjin Estuary, Taiwan

Pei Jie Meng, Tsu Chang Hung, Woei Lih Jeng, Bor-Cheng Han, Lee-Shing Fung

Research output: Contribution to journalArticle

Abstract

Humic substances were extracted from Erhjin estuary sediments for the determination of their heavy metal concentrations using atomic absorption spectrophotometry. The purposes are to investigate the distributions of heavy metals in humic substances as well as the environmental characteristics of heavy metals associated with different phases in the sediments. The concentrations of Cu, Pb, and Fe and Mn in humic acid were found to be between 282 and 821 ug/g, nd and 49.5 ug/g, 15.2 and 114 mg/g, and 118 and 454 ug/g, respectively. In fulvic acid, the concentrations of Pb, Fe and Mn were all below the detection limits, but Cu concentration was found to be between 165 and 1750 ug/g. Also, we found that fulvic acid has stronger copper complexing capacity than humic acid, but has weaker complexing capacities than humic acid for the other metals (Pb, Fe and Mn). For the sequential leaching analysis of sediments, higher copper percentages were generally associated with high sulfide concentrations in the anoxic area, but lower copper percentages were generally associated with lower sulfide concentrations in the oxic area. The competition for copper between sulfide and humic substances was also discussed.
Original languageTraditional Chinese
Pages (from-to)29-38
Number of pages10
JournalActa Oceanographica Taiwanica
Volume39
Issue number1
Publication statusPublished - Jun 2001

Keywords

  • 錯合能
  • 重金屬
  • 腐植物質

Cite this

Complexation of Heavy Metals by Humic Substances in Sediments from the Polluted Erhjin Estuary, Taiwan. / Meng, Pei Jie; Hung, Tsu Chang; Jeng, Woei Lih; Han, Bor-Cheng; Fung, Lee-Shing.

In: Acta Oceanographica Taiwanica, Vol. 39, No. 1, 06.2001, p. 29-38.

Research output: Contribution to journalArticle

Meng, Pei Jie ; Hung, Tsu Chang ; Jeng, Woei Lih ; Han, Bor-Cheng ; Fung, Lee-Shing. / Complexation of Heavy Metals by Humic Substances in Sediments from the Polluted Erhjin Estuary, Taiwan. In: Acta Oceanographica Taiwanica. 2001 ; Vol. 39, No. 1. pp. 29-38.
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title = "Complexation of Heavy Metals by Humic Substances in Sediments from the Polluted Erhjin Estuary, Taiwan",
abstract = "本研究自二仁溪河川及河口附近海域沈積物中萃取出腐植物質並分離出黃酸及腐植酸,經消化後測定其中重金屬(包括Fe, Mn, Cu, Pb)之含量。結果顯示腐植酸中鉛含量介於12μg/g~49.5μg/g,鐵含量介於15.2~114mg/g及錳含量介於119~454μg/g,較黃酸中含量為高,而相反地,黃酸中比腐植酸中具較高之銅含量(282~821μg/g)。各金屬在腐植物質中含量大小則依序為Fe>Cu>Mn>Pb。 再者,以連續萃取方式分離沈積物中鐵與銅在不同化學相之含量,分析結果發現在污染區之河段具較低之溶氧量,較高之硫化鐵硫含量及高比例之銅存在於硫化物相,而銅在硫化物相之含量與硫化鐵硫具非常顯著之正相關(p<0.01),相對地,腐植物質相銅與硫化物相銅所占比例及硫化鐵硫含量大致皆呈負相關,亦即硫化鐵硫含量愈高,則腐植物質相銅所占比例愈低而硫化物相銅所占比例則愈高,顯示銅,硫化鐵硫與腐植物三者間之熱力化學平衡效應,且證據顯示硫化鐵硫對於銅之結合力強於腐植物質,然而此作用對於鐵則不明顯,因此,不同元素在環境中行為表現亦有所差異。",
keywords = "錯合能力, 腐植物質, 重金屬, 錯合能, 重金屬, 腐植物質",
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journal = "Acta Oceanographica Taiwanica",
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T1 - Complexation of Heavy Metals by Humic Substances in Sediments from the Polluted Erhjin Estuary, Taiwan

AU - Meng, Pei Jie

AU - Hung, Tsu Chang

AU - Jeng, Woei Lih

AU - Han, Bor-Cheng

AU - Fung, Lee-Shing

PY - 2001/6

Y1 - 2001/6

N2 - 本研究自二仁溪河川及河口附近海域沈積物中萃取出腐植物質並分離出黃酸及腐植酸,經消化後測定其中重金屬(包括Fe, Mn, Cu, Pb)之含量。結果顯示腐植酸中鉛含量介於12μg/g~49.5μg/g,鐵含量介於15.2~114mg/g及錳含量介於119~454μg/g,較黃酸中含量為高,而相反地,黃酸中比腐植酸中具較高之銅含量(282~821μg/g)。各金屬在腐植物質中含量大小則依序為Fe>Cu>Mn>Pb。 再者,以連續萃取方式分離沈積物中鐵與銅在不同化學相之含量,分析結果發現在污染區之河段具較低之溶氧量,較高之硫化鐵硫含量及高比例之銅存在於硫化物相,而銅在硫化物相之含量與硫化鐵硫具非常顯著之正相關(p<0.01),相對地,腐植物質相銅與硫化物相銅所占比例及硫化鐵硫含量大致皆呈負相關,亦即硫化鐵硫含量愈高,則腐植物質相銅所占比例愈低而硫化物相銅所占比例則愈高,顯示銅,硫化鐵硫與腐植物三者間之熱力化學平衡效應,且證據顯示硫化鐵硫對於銅之結合力強於腐植物質,然而此作用對於鐵則不明顯,因此,不同元素在環境中行為表現亦有所差異。

AB - 本研究自二仁溪河川及河口附近海域沈積物中萃取出腐植物質並分離出黃酸及腐植酸,經消化後測定其中重金屬(包括Fe, Mn, Cu, Pb)之含量。結果顯示腐植酸中鉛含量介於12μg/g~49.5μg/g,鐵含量介於15.2~114mg/g及錳含量介於119~454μg/g,較黃酸中含量為高,而相反地,黃酸中比腐植酸中具較高之銅含量(282~821μg/g)。各金屬在腐植物質中含量大小則依序為Fe>Cu>Mn>Pb。 再者,以連續萃取方式分離沈積物中鐵與銅在不同化學相之含量,分析結果發現在污染區之河段具較低之溶氧量,較高之硫化鐵硫含量及高比例之銅存在於硫化物相,而銅在硫化物相之含量與硫化鐵硫具非常顯著之正相關(p<0.01),相對地,腐植物質相銅與硫化物相銅所占比例及硫化鐵硫含量大致皆呈負相關,亦即硫化鐵硫含量愈高,則腐植物質相銅所占比例愈低而硫化物相銅所占比例則愈高,顯示銅,硫化鐵硫與腐植物三者間之熱力化學平衡效應,且證據顯示硫化鐵硫對於銅之結合力強於腐植物質,然而此作用對於鐵則不明顯,因此,不同元素在環境中行為表現亦有所差異。

KW - 錯合能力

KW - 腐植物質

KW - 重金屬

KW - 錯合能

KW - 重金屬

KW - 腐植物質

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