|
|||||
|
|
| 不同有机酸对重金属镉形态及生物有效性的影响 | |
| 引用本文： | 乔冬梅,樊向阳,齐学斌,高青,樊涛,葛亚明,安志兴.不同有机酸对重金属镉形态及生物有效性的影响[J].灌溉排水学报,2012,31(6):15-17,31. |
| 作者姓名： | 乔冬梅 樊向阳 齐学斌 高青 樊涛 葛亚明 安志兴 |
| 作者单位： | 1. 中国农业科学院农田灌溉研究所,河南新乡453002 中国农业科学院河南新乡农业水土环境野外科学观测试验站,河南新乡453002 2. 中国农业科学院农田灌溉研究所,河南新乡,453002 3. 河南科技学院动物科学学院,河南新乡,453003 |
| 基金项目： | 基金项目:国家自然科学基金项目，国家863计划课题 |
| 摘 要： | 为了探求根系分泌有机酸对重金属Cd2+存在形态及生物有效性的影响,研究了不同质量摩尔浓度酒石酸、草酸、苹果酸、柠檬酸、乙酸和EDTA对重金属Cd2+各个形态的影响。研究得出,EDTA最有利于重金属Cd2+活性的增强,其次为柠檬酸和乙酸,苹果酸的效果最差。质量摩尔浓度为1、3mmol/kg的乙酸和柠檬酸以及5、6、7mmol/kg的EDTA最有利于重金属Cd2+生物有效性系数的提高。 |
| 关 键 词： | 有机酸 Cd2+ 存在形态 生物有效性 |
The Effect of Different Organic Acids on Existing forms and Bioavailability of Cadmium |
|
| QIAO Dong-mei,FAN Xiang-yang,QI Xue-bin,GAO Qing,FAN Tao,GE Ya-ming,AN Zhi-xing.The Effect of Different Organic Acids on Existing forms and Bioavailability of Cadmium[J].Journal of Irrigation and Drainage,2012,31(6):15-17,31. | |
| Authors: | QIAO Dong-mei FAN Xiang-yang QI Xue-bin GAO Qing FAN Tao GE Ya-ming AN Zhi-xing |
| Institution: | 1.Farmland Irrigation Research Institute of CAAS,Xinxiang 453002,China; 2.Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Henan Province,CAAS,Xinxiang 453002,China; 3.Henan Institute of Science and Technology,College of Animal Science,Xinxiang 453003,China) |
| Abstract: | In order to reveal the effect of the exudation of organic acids by root on existing forms and bioavailability of Cd2+,the effects of tartaric acid,oxalic acid,malic acid,citric acid,acetic acid and EDTA of different concentrations on existing forms of Cd2+ were studied.The results showed that EDTA was the most beneficial to enhance the activity of Cd2+,and citric acid and acetic acid came second,and effect of malic acid was the worst.When the concentrations of acetic acid and citric acid were one,and three mmol/kg,and the concentrations of EDTA were five,six and seven mmol/kg,the bioavailability would be improved. |
| Keywords: | organic acid Cd^2+ existing form bioavailability |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |