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Computation of the efficiencies and polarization effects of XUV gratings used in classical and conical mountings

✍ Scribed by Patrick Vincent; Michel Neviere; Daniel Maystre


Publisher
Elsevier Science
Year
1978
Weight
274 KB
Volume
152
Category
Article
ISSN
0029-554X

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## Abstract In order to meet the requirements of analyzing very low concentrations of pesticides in water (typically at 0.1 ΞΌg/l or less), samples have to be concentrated prior to GC‐analysis. Samplie pre‐concentration by off‐line methods based on solid phase extraction (SPE) or liquid‐liquid extra