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Determination of nonylphenol in water

Hiroyuki KONISHICSatoko FUJIECKumiko YAGUCHICJunichi NAKAGAWA

Nonylphenol (NP) is a parameter of the water quality standard that must be examined under the drinking water law. Since NP is not a single substance being separated into 13 isomers by the GC/MS method. To measure these isomers with a high degree of accuracy we evaluated the analytic conditions such as GC conditions and extraction methods. As a result the peaks of all isomers could be measured at a level of 0.01 ppm by the high-pressure injection method at an injection pressure of 30 psi using an HP-5 separation column. Extraction using a PLS-3 solid-phase column provided a high yield of 84-114%. We examined the NP concentration in tap and raw water samples collected from 48 sites on islands and in the Tama area in Tokyo and found that it was below the detection limit in all samples.
Keywords: ƒmƒjƒ‹ƒtƒFƒm[ƒ‹ , ƒKƒXƒNƒƒ}ƒgƒOƒ‰ƒt^Ž¿—Ê•ªÍŒv , ŒÅ‘Š’Šo ,
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