Simultaneous multielemental analysis of some environmental and biological samples by inductively coupled plasma atomic emission spectrometry.
Simultaneous multielemental analysis of some environmental and biological samples by inductively coupled plasma atomic emission spectrometry.
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通过电感耦合等离子体原子发射光谱法对一些环境和生物样品进行同步多元素分析。
DOI：
10.1021/ac00161a017
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发表时间：
1988
影响因子：
7.4
通讯作者：
Boyle,JR
中科院分区：
文献类型：
--
作者：
Hee,SS;Boyle,JR
与微波法和热板法相比，帕尔弹法是一种较好的同时电感耦合等离子体原子发射光谱（ICP-AES）多元素分析的酸消解方法。与连续消化方案相比，单次消化往往不能产生定量结果。然后，对所研究的各种底物进行精炼，使其尽可能相似。在分析溶液中，碳对As和Se的干扰必须在> 3000 pg C/mL时进行校正，因此必须监测C含量，以评估digestion的效率，并确定是否需要对C存在进行元素间校正。在3000-10000 pg C/mL范围内，C校正是适当的。经证明，使用修正的k值可提供准确度，并且必须用于ICP-AES光谱仪，其中首先对固定通道进行背景校正。对辛辛那提土壤和辛辛那提儿童粪便的分析结果表明，SI和Ti可能是儿童土壤摄入的示踪元素，环境和生物样品的多元素同时分析可能会减少使用不同消解技术分析所固有的较大系统误差，如原子吸收分光光度法（AAS）;对于AAS（1），所用的湿法或干法灰化方法的类型通常因同一组织中的元素而异。大多数研究者关心的是他们的方法对单一元素的充分性，而不是对其他元素的适用性。此外，当需要进行许多单元素测定时，需要长期储存样品，与“新鲜”样品相比，除了冗长的分析时间外，还增加了污染和非代表性结果的可能性。同时电感耦合等离子体原子发射光谱法（ICP-AES）是对AAS的一种多元素补充，因为在收集中有许多相同的方法，
The Parr bomb technique Is found to be the preferred acid digestion method for multielemental analysis by simultaneous Inductively coupled plasma atomic emission spectroscopy (ICP-AES) when compared with microwave and hot plate methods for many environmental and biological specimens, but especially for the latter. One digestion alone often did not produce quantitative results compared with a sequential di-gestion scheme. The digestions were then refined to be as similar as possible for the various substrates studied. The Interference of carbon on As and Se had to be corrected at> 3000 pg of C/mL In the analysis solution, and thus the C content had to be monitored to assess the efficiency of the digestions and to determine If interelemental correction for C presence was required. The C correction was adequate In the range 3000-10000 pg of C/mL. The use of modified k values was demonstrated to provide accuracy and had to be used for ICP-AES spectrometers where background correc-tions were performed first for fixed channels. The results on Cincinnati soils and feces of Cincinnati children showed that SI and Ti were possible tracer elements for soil Ingestion by the children.Simultaneous multielemental analysis of environmental and biological samples potentially can minimize the large sys-tematic errors inherent in analyses using different digestion techniques as often encountered for such single-element methods as atomic absorption spectrophotometry (AAS); the type of wet or dry ashing process utilized oftenvaries from element to element in the same tissue for AAS (1). Most investigators are concerned with theadequacy of their methodology for a single elementrather than its applicability to other elements. Furthermore, the need to store samples for a long period when many single-element determinations are required enhances the likelihood of contamination and nonrepresentative results as compared with “fresh” samples, in addition to lengthy analysis times. Simultaneous inductively coupled plasma atomic emission spectroscopy (ICP-AES) is a multielemental complement to AAS since much of the same methodology in collection,