使用能量色散X射线荧光光谱法（EDXRF ）对土壤中的重金属元素进行检测基本都是针对国家标准中提到的8种重金属，目前土壤中重金属锰的污染也引起了重视。实验采用EDXRF对土壤中的重金属铬和锰进行快速检测，为了提高铬和锰测试结果的准确度，用与之产生吸收增强效应和谱线干扰的元素对土壤中的铬和锰进行校正；使用土壤标准样品绘制校准曲线，校正前铬和锰的线性相关系数分别为0.853和0.717，校正后铬和锰的线性相关系数分别为0.998和0.991，线性明显变好。对一个土壤样品进行精密度考察，铬和锰测定结果的相对标准偏差（RSD ，n＝11）分别为7.2％和0.66％。用能量色散X射线荧光光谱法对土壤样品中铬和锰进行检测，结果与波长色散X射线荧光光谱法测定结果一致。
The heavy metal elements in soil ,which were determined by energy dispersive X‐ray fluorescence spectrometry (EDXRF ) ,usually meant eight heavy metals mentioned in national standard .At present , the pollution of soil by metal element manganese has attracted much attention .Chromium and manganese in soil was rapidly determined by EDXRF .In order to enhance the measurement accuracy of chromium and manganese ,they were corrected using the elements which had absorption enhancement effect and spectral interference .The calibration curve was prepared using the standard sample of soil .The linear correlation coefficient for chromium and manganese was 0.853 and 0.717 before correction ,respectively ,while it in‐creased to 0.998 and 0.991 after correction .The linearity was significantly improved .The precision test was conducted using one soil sample .The relative standard deviation (RSD ,n= 11) was 7.2% and 0.66% ,respectively .The content of chromium and manganese in soil sample was determined by EDXRF , and the results were consistent with those obtained by wavelength dispersive X‐ray fluorescence spectrome‐try .
参考文献
| [1] | 吴昊.重金属铬污染土壤治理方法研究进展[J].农业科技与装备,2015(8):8-10. |
| [2] | 郑向群;郑顺安;李晓辰.叶菜类蔬菜土壤铬（Ⅲ）污染阈值研究[J].环境科学学报,2012(12):3039-3044. |
| [3] | 王满苹;曹百穹;王顺;胡建东;王玲;孙晓晖;陈睿鹏.激光诱导击穿光谱检测土壤中重金属Pb和Mn的试验研究[J].河南农业大学学报,2014(5):648-652. |
| [4] | 张盟;古桂雄;颜崇淮.铅和锰对儿童神经系统毒性及联合毒性的研究进展[J].中国妇幼健康研究,2014(5):906-907. |
| [5] | 李广云;曹永富;赵书民;张楠;郭建民;张婷;赵莹.土壤重金属危害及修复措施[J].山东林业科技,2011(6):96-101. |
| [6] | 许海;邵婉晨;李光辉;李慧;刘强;孟磊;娄倩;徐加宽;刘建国.沪宁高速公路（常州段）两侧农田土壤重金属污染状况检测评价[J].江苏农业学报,2009(1):123-126. |
| [7] | 黄薇;符式锦;王旭日;贾振亚.微波消解－ICP－MS测定土壤及植物中硒的含量[J].广州化工,2014(23):146-148. |
| [8] | 张鹤鹑;陈功锡;袁志忠.ICP-OES法测定酒鬼酒生态工业园区土壤中6种重金属元素[J].湖南师范大学自然科学学报,2013(3):51-55. |
| [9] | 孙晓慧;李章;刘希良.微波消解-电感耦合等离子体原子发射光谱法测定土壤和水系沉积物中15种组分[J].冶金分析,2014(11):56-60. |
| [10] | 王志强;王辉;张志豪;刘刚;姚艳芝.基于电化学和虚拟仪器的土壤重金属检测系统研究[J].农业机械学报,2015(1):119-126. |
| [11] | 高志军;陈静;陈浩凤;李杰.熔融制样-X射线荧光光谱法测定硅酸盐和铝土矿中主次组分[J].冶金分析,2015(7):73-78. |
| [12] | 刘燕德;万常斓;孙旭东;郝勇.X射线荧光光谱技术在重金属检测中的应用[J].激光与红外,2011(6):605-611. |
| [13] | 陆安祥;王纪华;潘立刚;韩平;韩莹.便携式X射线荧光光谱测定土壤中Cr,Cu,Zn,Pb和As的研究[J].光谱学与光谱分析,2010(10):2848-2852. |
| [14] | 黄秋鑫;孙秀敏.粉末标准曲线XRF法检测土壤中的重/类金属[J].环境科学与技术,2014(9):92-98. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%