Clean environment for ultratrace analysis

Influence of laboratory environment on the precision and accuracy of trace element analysis

“…However, the result obtained for lead in the conventional laboratory was considerably higher " Water samples were kept in the clean room but were exposed to the different laboratories during acidification and determination step. 6 Error is mean deviation based on triplicate determihation. than that obtained in the clean room.…”

“…Influence of Laboratory Environment on the Determination of Cadmium and Lead in Veal Sample01 Sample decomposed by dry ashing, using sulfuric acid as ashing aid at 500 °C. Blank values were less than the mean deviation of the sample being determined 6. Error is mean deviation based on triplicate determination.…”

“…Blank values were less than the mean deviation of the element being determined 6. Error is mean deviation based on triplicate determination 6. Error is standard deviation based on results from various instrumental techniques.…”

The Collection and Preparation of Human-Blood Plasma or Serum for Trace-Element Analysis

“…In addition, the potential for trace element contamination from air particulates has been examined by many other investigators [21,[28][29][30][31][32]. Leading experts in trace and ultratrace analysis consider a clean laboratory to be an essential requirement to reduce this source of contamination.…”

Comparative Studies on Cadmium Levels in the North Sea, Norwegian Sea, Barents Sea and the Eastern Arctic Ocean

“…Careful studies on contamination, at least at the laboratory stage, had already been achieved in the early seventies [1,2], but a realistic picture about trace metals like lead, the determination of which might be severely affected by analytical contamination, was only offered by Patterson [3].…”