CAJ | 학술논문

采用微波密闭消解电感耦合等离子发射光谱法(ICP-AES)对青藏高原土壤-牧草-家畜矿物质系统中无机元素K,Ca,Na,Mg,P,S,Fe,Cu,Mn,Mo,Co和Zn的含量进行了测定,对土壤样品消解采用HNO_3-HF-H_2O_2酸溶体系,而草畜样品消解则采用HNO_3-H_2O_2酸溶体系,以简化实验操作,降低空白值.方法的相对标准偏差均在5%以下,回收率93.5%～113.5%.实验表明该方法具有良好的准确度和精密度,验证了分析数据的可靠性,为研究青藏高原土-草-畜矿物质系统中矿物质元素含量、循环、互作以及在放牧补饲生产中科学运用矿物质元素与添加剂提供了科学依据.
채용미파밀폐소해전감우합등리자발사광보법(ICP-AES)대청장고원토양-목초-가축광물질계통중무궤원소K,Ca,Na,Mg,P,S,Fe,Cu,Mn,Mo,Co화Zn적함량진행료측정,대토양양품소해채용HNO_3-HF-H_2O_2산용체계,이초축양품소해칙채용HNO_3-H_2O_2산용체계,이간화실험조작,강저공백치.방법적상대표준편차균재5%이하,회수솔93.5%～113.5%.실험표명해방법구유량호적준학도화정밀도,험증료분석수거적가고성,위연구청장고원토-초-축광물질계통중광물질원소함량、순배、호작이급재방목보사생산중과학운용광물질원소여첨가제제공료과학의거.
The contents of inorganic elements including K,Ca,Na,Mg,P,S,Fe,Cu,Mn,Zn,Mo,and Co in the soil-grassanimal mineral system from Qinghai Tibetan Plateau were determined by ICP-AES using high pressure system-sealed microwave digestion.The sample of soil was digested with HNO_3-HF-H_2O_2 acids system,but others including pasture,animal fur,liver,and serum were digested with HNO_3-H_2O_2 acids system.The operation would be simplified and the blank value would be decreased with the above acids systems.The results were proved to be reliable with the relative standard deviation being 0.271%2.633% for Ca,2.971%-4.854% for Co,0.372%-2.874% for Cu,0.600%-3.683% for Fe,0.347%-2.829% for K,0.626%-2.593% for Mg,0.705%-4.828% for Mn,2.946%-4.622% for Mo,0.689%-3.621% for Na,0.422%-3.890% for P,and 0.143%-4.622% for S,0.166%-2.399% for Zn,and all of them were less than 5% for all the elements,and the recovery being 97.1%-101.4% for Ca,93.5%-112.5% for Co,95.2%-104.0% for Cu,96.9%-104.2% for Fe,96.1%-105.6% for K,96.2%-102.8% for Mg,91.5%-108.9% for Mn,95.0%-113.5% for Mo,95.2%-101.8% for Na,94.7%-100.7% for P,98.3%-108.4% for S,and 97.5%-102.0% for Zn by adding standard recovery experiment.The results of determination were proved that the method of sealed microwave digestion ICP-AES was sensitive,precise,easy to operate and rapid for the determination of inorganic elements in the soil-grass-animal mineral system,and could satisfy the sample examination request.The methods and results were meaningful to research on the soil-pasture-animal mineral system including the contents of mineral elements,the circulation of mineral elements,the interaction,and the application of mineral additive.