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Simultaneous determination of nine C4-C9 alkylphenols and bisphenol A in environmental water using gas chromatography-mass spectrometry 1 1 Introduction 1 2 Experimental 2 2.1 Materials and reagents 2 2.2 GC-MS analysis 2 2.3 Calibration solutions 2 2.4 Derivation optimization experiment 2 2.5 Extraction optimization experiment 2 2.6 Real water test 3 3 Results and discussion 3 3.1 Chromatogram analysis 3 3.2 Optimization of derivatization time 3 3.3 Optimization of extraction condition 4 3.3.1 Influence of extraction solvent 4 3.3.2 Influence of extraction number 4 3.3.3 Influence of extraction time 4 3.3.4 Influence of pH value in water 4 3.3.5 Influence of extraction solvent volume 5 3.3.6 Influence of salt content 5 3.3.7 Effect of concentration degree 5 3.4 Method validation and application to real samples 5 3.4.1 R2 and LOD 5 3.4.2 Recovery and precision 6 3.4.3 Determination of real water samples 6 4 Conclusions 7 Declaration of Competing Interest 8 Acknowledgments 8 Funding information 8 References 8
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Common subject areas: history, science, philosophy, social sciences.
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- nonfiction