Rapid simultaneous determination of picogram quantities of aluminum and chromium from water by gas phase chromatography
Rapid simultaneous determination of picogram quantities of aluminum and chromium from water by gas phase chromatography
复制标题
气相色谱法快速同时测定水中皮克量的铝和铬
DOI：
10.1021/ac60351a009
复制
发表时间：
1975
影响因子：
7.4
通讯作者：
T. Gosink
中科院分区：
文献类型：
--
作者：
T. Gosink
genenty和他的同事(1)报道了铝和铬的同时分析，但是过程冗长，需要反复处理，因此，准确性和精密度虽然很好，但会受到一些影响。在我们努力使氟化金属螯合物气相色谱法适用于天然水样的过程中，我们开发了本报告中详细描述的改进程序。气相色谱法和螯合剂用于铝和铬的分析至少有两个优点。首先，通过利用电子捕获探测器对全氟烷基的灵敏度，实现了比大多数标准方法高几个数量级的灵敏度，其次，螯合技术似乎将使研究人员能够区分溶解的、颗粒状的和吸附形式的元素，从原始的、过滤的和酸消化的样品的分析差异中，可以制备并因此稳定。在采集现场，而不是在样品发生变化后的某个时间。这方面将在提交给其他地方的一篇文章中讨论。
The simultaneous analysis of aluminum and chromium has been reported by Genty and coworkers (1), but the procedure is lengthy, requires repeated handling, and, as a consequence the accuracy and precision, though good, suf-fers some deterioration. In our efforts to adapt fluorinated metal chelate gas chromatography to natural water sam-ples, we have developedthe improved procedure described in detail in this report.There are at least two advantages in the use of gas phase chromatography and of chelates for the analysis of alumi-num and chromium. The first is that by taking advantage of the electron capture detectors sensitivity to perfluoroalkyl groups, several orders of magnitude greater sensi-tivity over most standard methods is achieved, and the sec-ond is that it appears that the chelation technique will en-able investigators to differentiate between dissolved, par-ticulate, and adsorbed forms of the elementfrom the analy-sis differences for raw, filtered, and acid digested samples which can be prepared, and thus stabilized, at the collection site rather than at a later time after the sample has changed. This aspect will be discussed in an article to be submitted elsewhere.