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Quality control in the routine analysis of methylmercury in biological and environmental materials using gas chromatography with electron capture detection
Author(s) -
Rubi E.,
Lorenzo R. A.,
Casais M. C.,
Cela R.
Publication year - 1994
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590080719
Subject(s) - chemistry , organomercury , control chart , methylmercury , gas chromatography , statistical process control , chromatography , organomercury compounds , quality (philosophy) , control (management) , column (typography) , process engineering , analytical chemistry (journal) , environmental chemistry , artificial intelligence , computer science , organic chemistry , engineering , philosophy , bioaccumulation , process (computing) , epistemology , operating system , telecommunications , frame (networking) , metal
In the application of GC ECD procedures for methylmercury analysis and organomercury speciation, frequent column‐treatments must be carried out to maintain the analytical system under statistical control. Often the decision to carry out a new treatment is taken without any statistical assistance. Several quality control techniques have been applied to decide the best time to make these treatments. A Trigg tracking signal chart in combination with a moving estimate of standard deviation charts gives the best indication about the timing of each new treatment.