应用原子吸收分光光度法测定山羊瘤胃液、血清钙和镁

本文报告应用国产WFX—1A型原子吸收分光光度计测定山羊瘤胃液和血清的钙和镁,并进行实验讨论。血液钙的变异系数和回收率分别为0.67%知102%,镁的变异系数和回收率分别为0.55%和104%。实验结果与常规法比较差异不显著(P>0.05)。     

清洁级KM小鼠血清中5种微量元素的测定

在SPF屏障系统内,按一般方法饲养清洁级KM小鼠,采用原子吸收光谱法测定血清中5种微量元素含量,进行统计学分析。结果表明,KM小鼠血清中5种微量元素的含量顺序大小是Ca>Mg>Fe>Zn>Cu。雌雄KM小鼠之间血清中微量元素Zn、Fe、Mg含量比较,差异具有显著性(P<0.05)。     

紫茎泽兰对煤渣污染土壤重金属的富集·修复特性

[目的]为了检测紫茎泽兰对煤渣污染土壤中重金属的富集、修复特性。[方法]采用火焰原子吸收法测定样品中重金属含量。[结果]土壤中金属含量大小顺序为Fe>Mg>Cu>Ni>Cr>Mn>Ni,Cr污染达到Ⅱ级标准;紫茎泽兰对重金属有一定的富集作用,特别是对Mg、Cr、Ni、Pb的富集系数均大于1,对Cr的转运系数为1.333。[结论]紫茎泽兰可以作为煤渣污染土壤Cr的修复植物。     

Evaluation of Cadmium,Copper, Lead,and Zinc Levels in Soil Samples near Locust Pods

The genus Prosopis is a tree or shrub in the leguminosae family, subfamily fabaceae (mimosaceae). Many plants of the genus Prosopis are known to have medicinal properties. Only one species of Prosopis is found in Jordan, Prosopis farcta (Banks & Sol.) J.F. Macbr. The local name is Yanbout, and the English name is locust pods.

The aim of this study was to investigate some selected heavy metals including cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn) in Prosopis farcta, an unexplored Jordanian species of the Prosopis genus, because no data are available about these levels in this medicinal plant. These metals were tested in different parts of Prosopis farcta including root, aerial, and fruit as ethanolic extract plant and dry plant. Moreover, these metals were investigated in soil samples collected from the same area in which Prosopis farcta was grown. Results revealed that there was a significant difference between root and fruit for all test elements (P < 0.05). Roots were found to contain high average concentrations of Pb (2.14 µg g^?1), Cu (18.56 µg g^?1), and Zn (13.74 µg g^?1). Copper and Zn concentrations in Prosopis farcta were within the permissible limits, whereas Pb concentration exceeded the permissible limit. Moreover, soil samples were analyzed for the metals. Results revealed that there was a positive correlation between the levels of Cu and Zn in medicinal plants and soils, whereas there was a negative correlation for Pb.

Two certified reference materials (tea leaves, NCSDC 73351; soil, GBW 07406) were analyzed to authenticate the accuracy of the method, and the precision was expressed by relative standard deviation.     

原子吸收法测定海洋生物体中Fe、Mn、Ni的方法研究

通过收集国内外现行标准、规范,以中国海洋领域现行标准体系为基础,研究以原子吸收法测定海洋生物体中Fe、Mn、Ni元素的标准方法。通过加入Cacl2消除火焰法测定Fe、Mn元素的干扰或加入Pd(NO3)2和Mg(NO3)2消除石墨炉法测定Mn、Ni元素的干扰;在特定温度以HNO3-H2O2常压消解或微波消解样品,Fe、Mn元素以火焰法测定、Mn、Ni元素以石墨炉法测定,实验结果表明Fe、Mn、Ni元素的溶出值均在标准值范围内,从而证明该方法具有可行性,适用于海洋生物体的标准方法。     

AAS法测定加浆水中金属元素的含量

采用原子吸收分光光度计,选择最佳仪器工作条件,测定加浆水中K,Zn,Al,Fe,Mg,Mn,Cd,Pb等元素含量。该方法简便、快速、准确,应用于加浆水水样分析,结果满意。     

火焰原子吸收测定食品包装物中锑浸出量

建立了测定食品包装物中锑浸出量的火焰原子吸收光谱法。将包装物的4%乙酸浸泡液在酸性条件下用碘化钾还原,再以吡咯烷二硫代氨基甲酸铵(APDC)作为螯合剂萃取后,以火焰原子吸收法测定样品锑含量。方法的检出限为0.05μg/ml,加标回收率为88.5%～93.4%,相对标准偏差(RSD)为6%～8%。本方法适用于包装物中锑浸出量的测定,实验结果准确、灵敏度高,精密度好。     

喂食鸡蛋、葵花籽的清洁级KM小鼠血清中5种微量元素含量变化的研究

在SPF屏障系统内,给清洁级KM小鼠在日粮中添加一定量的鸡蛋和葵花籽,采用原子吸收光谱法测定血清中5种微量元素,进行统计学分析。结果表明,对照组的雌雄KM小鼠血清中微量元素锌、铁、镁含量比较差异具有显著性(P<0.05),实验组的雌雄KM小鼠血清中微量元素铜、铁含量比较差异具有极显著性(P<0.01)。组别间雄性小鼠进行比较,锌含量比较差异具有显著性(P<0.05),铁、钙含量比较差异具有极显著性(P<0.01);组别间雌性小鼠进行比较,铁、钙含量比较差异具有极显著性(P<0.01)。结果提示,雌雄间血清中部分微量元素含量差别较大。经常食用鸡蛋、葵花籽等天然食品,可提高体内一些必需微量元素的含量。     

原子吸收分光光度法测定植物中微量元素的研究(英文)

The aim of the study is to investigate the contents of trace element Se,Cd,Pb in three plants including burdock,ginkgol and garlic via graphite furnace atomic absorption and standard addition method. The results show that Se in burdock stem,skin and leaf are 32.40,48.63,38.10 μg/g,respectively; Cd in burdock stem,skin and leaf are 0.160 0,0.300 0,0.140 0 μg/g,respectively; Cd in burdock stem,skin and leaf are 2.020,3.960,2.410 μg/g,respectively. In the ginkgo and ginko leaf,Se contents are 17.63 and 16.91 μg/g,respectively; for Cd are 0.181 0 and 0.202 0 μg/g,respectively; for Pb are 3.572 and 4.021 μg/g,respectively. In garlic,Se,Cd and Pb are 73.900 0,6.900 0 and 0.390 0,respectively. All the standard deviations of measured results are below 2.3%,recovery rate are from 99% to 101%.     

Determination of the Trace Element Contents in Plants Using Atomic Absorption Spectrophotometer

The aim of the study is to investigate the contents of trace element Se,Cd,Pb in three plants including burdock,ginkgol and garlic via graphite furnace atomic absorption and standard addition method. The results show that Se in burdock stem,skin and leaf are 32.40,48.63,38.10 μg/g,respectively; Cd in burdock stem,skin and leaf are 0.160 0,0.300 0,0.140 0 μg/g,respectively; Cd in burdock stem,skin and leaf are 2.020,3.960,2.410 μg/g,respectively. In the ginkgo and ginko leaf,Se contents are 17.63 and 16.91 μg/g,respectively; for Cd are 0.181 0 and 0.202 0 μg/g,respectively; for Pb are 3.572 and 4.021 μg/g,respectively. In garlic,Se,Cd and Pb are 73.900 0,6.900 0 and 0.390 0,respectively. All the standard deviations of measured results are below 2.3%,recovery rate are from 99% to 101%.