烟煤和无烟煤中碘的赋存形态及其环境效应分析

彭炳先; 吴代赦

烟煤和无烟煤中碘的赋存形态及其环境效应分析

彭炳先^1,2,,
吴代赦²

1.
江西师范大学化学化工学院, 江西南昌 330022;
2.
南昌大学环境与化学工程学院,江西南昌 330031

基金项目: 国家自然科学基金(40133010, 40973080)。

详细信息

通讯作者:
彭炳先(1970-), 男, 江西吉安人, 博士, E-mail: pbingxian@163.com。

中图分类号: TQ553.1
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出版历程
- 收稿日期: 2011-12-05
- 刊出日期: 2012-03-31

Modes of iodine occurrence in bituminous coal and anthracite and their environmental effects

PENG Bing-xian^{1,2
,},
WU Dai-she²

1.
College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;
2.
School of Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China

摘要

摘要: 采用逐级化学提取和电感耦合等离子体质谱(ICP-MS)研究烟煤和无烟煤中碘的赋存形态。结果表明,烟煤和无烟煤中各种形态的碘含量由高到低依次都是有机态、铁锰氧化物结合态、水溶态、残留态、离子交换态和碳酸盐结合态。烟煤和无烟煤中有机结合态碘平均含量分别为47.4%±3.28%和43.3%±2.42%,Fe-Mn氧化物结合态碘分别为36.8%±3.70%和34.6%±4.77%,水溶态和离子交换态碘平均含量之和分别为10.3%±3.00%和14.3%±3.37%,碘的平均潜在淋失率分别10.9%和16.0%,平均潜在可淋失浓度分别为0.9 μg/g和1.2 μg/g。这说明无烟煤中生物有效态碘含量高于烟煤,在表生条件下烟煤和无烟煤中淋出的碘都能导致地表水中碘的浓度升高;无烟煤中碘的有利环境效应大于烟煤,而不良环境效应小于烟煤。
- 赋存形态 /
- 碘 /
- 烟煤 /
- 无烟煤 /
- 环境效应 /
- 逐级化学提取
Abstract: Modes of iodine occurrence in bituminous coal and anthracite were investigated by using inductively coupled plasma mass spectrometry (ICP-MS) and sequential chemical extraction. The results showed that iodine in both these coals occurs in a descending order of organic, bound with Fe-Mn oxide, water-soluble, residue, ion exchangeable, and the fraction bound to carbonate. In bituminous coal and anthracite, the mean relative content values are 47.4%±3.28% and 43.3%±2.42% for iodine bound to organic matter, 36.8%±3.70% and 34.6%±4.77% for the iodine bound to Fe-Mn oxides, respectively; the amounts of water soluble and ion exchangeable iodine are 10.3%±3.00% and 14.3%±3.37%, respectively; the potential leachable rates of iodine are 10.9% and 16.0%, and potential leachable iodine contents 0.9 μg/g and 1.2 μg/g, respectively. These results suggested that iodine leaching from both these coals can lead to an increase of iodine concentration in surface water at the supergene conditions; the effect of iodine in anthracite is more environmentally favorable than that in bituminous coal.
- occurrence mode /
- iodine /
- bituminous coal /
- anthracite /
- environmental effect /
- sequential chemical extraction

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参考文献(27)

DELANGE F. Risk and benefits of iodine supplementation[J]. Lancet, 1998, 351(9107): 923-924.

WENG H X, WENG J K, YONG W B, SUN X W, ZHONG H. Capacity and degree of iodine absorbed and enriched by vegetable from soil[J]. J Environ Sci(China), 2003, 15(1): 107-111.

GOLDSEHMIDT V M (Eds). Geochemistry[M]. Oxford : Clarendon Press, 1954: 730.

FUGE R, JOHNSON C C. Evidence for the chalcophile nature of iodine[J]. Chem Geol, 1984, 43(3/4) 347-352.

HOU X, CHAI C, QIAN Q, YAN X, FAN X. Determination of chemical species of iodine in some seaweeds[J]. Sci Total Environ, 1997, 204(3): 215-221.

ENGLUND E, ALDAHAN A, HOU X L, PETERSEN R, POSSNERT G. Speciation of iodine (¹²⁷I and ¹²⁹I) in lake sediments[J]. Nucl Instrum Methods Phys Res B, 2010, 268(7/8): 1102-1105.

HANSEN V, ROOS P, ALDAHAN A, HOU X ,POSSNERT G. Partition of iodine (¹²⁹I and ¹²⁷I) isotopes in soils and marine sediments[J]. J Environ Radioact, 2011, 108(12): 1096-1104.

彭炳先, 吴代赦, 李萍. 逐级提取法研究煤中溴的赋存状态[J]. 环境科学, 2011, 32(7): 2109-2113. (PENG Bing-xian, WU Dai-she, LI Ping. Study on modes of occurrence of bromine in coals using sequential chemical extraction procedure[J]. Environmental Science, 2011, 32(7): 2109-2113.)

郭少青, 杨建丽, 刘振宇. 晋城煤中汞的热稳定性与赋存形态的研究[J]. 燃料化学学报, 2009, 37(1): 115-118. (GUO Shao-qing, YANG Jian-li, LIU Zhen-yu. Thermal stability and occurrence of forms of mercury in Jincheng coal[J]. Journal of Fuel Chemistry and Technology, 2009, 37(1): 115-118.)

SU D C, WONG J W C. Chemical speciation and phytoavailability of Zn, Cu, Ni and Cd in soil amended with fly ash-stabilized sewage sludge[J]. Environ Int, 2004, 29(7): 895-900.

吕海亮, 陈皓侃, 李文, 李保庆. 义马煤中几种微量污染元素的赋存形态研究[J]. 燃料化学学报, 2003, 31(1): 31-34. (LU Hai-liang, CHEN Hao-kan, LI Wen, LI Bao-qing. Mode of occurrence of several harmful trace elements in Yima coal[J]. Journal of Fuel Chemistry and Technology, 2003, 31(1): 31-34.)

齐庆杰, 刘建忠, 周俊虎, 曹欣玉, 岑可法. 煤中氟化物分布与赋存特性研究[J]. 燃料化学学报, 2000, 28(4): 376-378. (QI Qing-jie, LIU Jian-zhong, ZHOU Jun-hu, CAO Xin-yu, CEN Ke-fa. Study on distribution and occurrence characteristic of fluorine in coal[J]. Journal of Fuel Chemistry and Technology, 2000, 28(4): 376-378.)

杨建业. 贵州普安矿区晚二叠世煤中微量元素的质量分数和赋存状态[J]. 燃料化学学报, 2006, 24(2): 129-135.(YAN Jian-ye. Contents and occurrence modes of trace elements in the Late Permian coals from Puan Coalfield, Guizhou Province[J]. Journal of Fuel Chemistry and Technology, 2006, 34(2): 129-135.)

唐修义, 黄文辉. 中国煤中微量元素[M]. 北京:商务印书馆, 2004: 165. (TANG Xiu-yi, HUANG Wen-hui. Trace elements in Chinese coal[M]. Beijing: Commercial Press, 2004: 165.)

WU D, DENG H, WANG W, XIAO H. Catalytic spectrophotometric determination of iodine in coal by pyrohydrolysis decomposition[J]. Anal Chim Acta, 2007, 601(2): 183-188.

WU D, DENG H, ZHENG B, WANG W, TANG X, XIAO H. Iodine in Chinese coals and its geochemistry during coali?cation[J]. Appl Geochem, 2008, 23(8): 2082-2090.

GB 481-93. 生产煤样采取方法[S]. 1993. (GB 481-93. Sampling method of coal sample for production[S]. 1993.)

HOU X L, FOGH C L, KUCERA J, ANDERSSON K G, DAHLGAARD H, NIELSEN S P. Iodine-129 and Caesium-137 in Chernobyl contaminated soil and their chemical fractionation[J]. Sci Total Environ, 2003, 308(1/3): 97-109.

HOU X L, YAN X Y, CHAI C F. Study on chemical species of iodine in some seaweed (II) Iodine-bound biological maro-molecules[J]. J Radioanal Nucl Chem, 2000, 245(3): 461-467.

MOORE R M, GRASZKO W. Methyl iodide distribution in the ocean and fluxes to the atmosphere[J]. Geophys Res, 1999, 104(C5): 11163-11171.

SCHALL C, HEUMANN K G, KIRST G O. Biogenic volatile organoiodine and organobromine hydrocarbons in the Atlantic Ocean from 42°N to 72°S[J]. Fresenius J Anal Chem, 1997, 359(3): 298-305.

FILIUS J D, LUMSDON D G, MEEUSSEN J C L, HIEMSTRA T, RIEMSDIJK W H V. Adsorption of fulvic acid on goethite[J]. Geochim Cosmochim Acta, 2000, 64(1): 51-60.

ILLÉS E,TOMBÁCZ E. The effect of humic acid adsorption on pH-dependent surface charging and aggregation of magnetite nanoparticles[J]. J Colloid Interface Sci, 2006, 295(1): 115-123.

WHITEHEAD C D. The sorption of iodide by soil components[J]. J Sci Food Agric, 1974, 25(1): 73-79.

PAR?TT R L. Anion adsorption by soil and soil materials[M]. Adv Agron, 1978, 30: 1-50.

黎彤. 地壳元素丰度的若干统计特征[J]. 地质与勘探, 1992, 28(10): 1-7. (LI Tong. Some statistical characteristics of elements abundance in earth crust[J]. Geology and Prospecting, 1992, 28(10): 1-7.)

刘振乾, 骆世明, 陈桂珠, 段舜山, 李明辉. 陆地生态系统卤甲烷释放特点及其生态意义[J]. 生态学报, 2003, 23(6): 1175-1183. (LIU Zhen-qian, LUO Shi-ming, CHEN Gui-zhu, DUAN Shun-shan, LI Ming-hui. Characteristics and ecological significances of methyl halides emissions by terrestrial ecosystems[J]. Acta Ecologica Sinica, 2003, 23(6): 1175-1183.)

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