全文快速搜索:          
引用本文:廖启林1,2 刘 聪3 蔡玉曼1,2 朱伯万1,2 王 成4 华 明1,2 金 洋1,2. 江苏典型地区水稻与小麦字实中元素生物富集系数(BCF)初步研究[J]. 中国地质, 2013, 40(1): 331-338.
LIAO Qi-lin1,2, LIU Cong3, CAI Yu-man1,2, ZHU Bai-wan1,2, WANG Cheng4, HUA Ming1,2, JIN Yang1,2. A preliminary study of element bioconcentration factors within milled rice and wheatmeal in some typical areas of Jiangsu Province[J]. Geology in China, 2013, 40(1): 331-338(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1911次   下载 1068 本文二维码信息
码上扫一扫!
分享到: 微信 更多
江苏典型地区水稻与小麦字实中元素生物富集系数(BCF)初步研究
廖启林1,2 刘 聪3 蔡玉曼1,2 朱伯万1,2 王 成4 华 明1,2 金 洋1,21,2,3,4
1.江苏省地质调查研究院,江苏 南京 210018;2.国土资源部地裂缝地质灾害重点实验室,江苏 南京 210018;3.江苏省国土资源厅,江苏 南京 210029;4.南京大学地球科学与工程学院,江苏 南京 210093
摘要:
提要:在分析研究了约500套水稻籽实-耕层土及约300套小麦籽实-耕层土样品相关元素含量等地球化学调查数据基础上,报道了江苏典型地区水稻与小麦籽实中Cd、Hg、Cu、Pb、Zn、Cr、As、Se、Mo、Mn、Fe、K、Ca、Mg等14个元素的生物富集系数(BCF)分布状况,统计结果显示,各元素的BCF值差异较大,通常Pb、Cr、Fe等元素BCF多小于1%,Hg、As、Mn、Ca等元素BCF多为1%~10%,Mo的平均BCF最大、Fe的平均BCF最小。研究发现,水稻与小麦籽实中Pb与Cd超标率分别超过15%、6%,BCF值差异与稻谷、小麦的元素含量无直接关系,部分元素的BCF与土壤pH、TOC、CEC、B含量等具有统计上的相关性,其中土壤pH与Cd、Ca、Mg元素的BCF呈显著负相关,而土壤的有机碳含量、阳离子交换量及B含量等也对部分元素的BCF值有一定影响。
关键词:  元素  生物富集系数  水稻籽实  小麦籽实  江苏
DOI:
分类号:
基金项目:国家自然科学基金(40873081)及国土资源公益性行业科研专项经费项目(201111021)联合资助。
A preliminary study of element bioconcentration factors within milled rice and wheatmeal in some typical areas of Jiangsu Province
LIAO Qi-lin1,2, LIU Cong3, CAI Yu-man1,2, ZHU Bai-wan1,2, WANG Cheng4, HUA Ming1,2, JIN Yang1,21,2,3,4
1. Geological Survey of Jiangsu Province, Nanjing 210018, Jiangsu, China;2.Key Laboratory for Earth Fissures Geological Disaster of MLR, Nanjing 210018, Jiangsu, China;3. Jiangsu Provincial Department of Land Resources, Nanjing 210029, Jiangsu, China;4. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, Jiangsu, China
Abstract:
Abstract:On the basis of studying related geochemical data of element distribution in 500 sets of rice seed samples and the cultivated soil and 300 sets of wheat seed samples and the root soil from some typical areas of Jiangsu Province, this paper has reported the bioconcentration factors (BCF) of Cd, Hg, Cu, Pb, Zn, Cr, As, Se, Mo, Mn, Fe, K, Ca and Mg which are distributed in milled rice and wheatmeal. Statistical results show that there exist obvious differences in BCF of different elements:usually BCF of Pb, Cr, Fe etc. is lower than 1%, BCF of Hg, As, Mn, Ca etc. is equal to 1% - 10%, the average BCF of Mo is the largest and the average BCF of Fe is the smallest. It is found that element content exceeds limited-standard in the studied milled rice or wheatmeal samples; for example , Pb content is 15% higher than the limited-standard proportion, and the Cd content is 6% higher than the limited-standard proportion. According to statistical data, there is not direct relationship between BCF distribution differences of related elements and element content exceeding the limited-standard within the above-stated milled rice or wheatmeal samples. Furthermore, it is pointed out that the controlling indicators of BCF distribution include probably soil pH, total organic carbon (TOC), cation exchange capacity (CEC), boron (B) concentration, and so on. There exists obvious negative correlation between the BCF of such elements as Ca and Mg and soil pH, and the correlated coefficient of the BCF of Cd versus soil pH is -0.94 related to the milled rice. The same environmental indicator in soil probably has different effects on BCF of different elements, their correlation can be positive or negative, but all correlations have to be set up with certain condition limits.
Key words:  element  bioconcentration factor  rice seed  wheat seed  Jiangsu