Detecting method of 4-nonyl phenol in waste water or regenerated water
A detection method, the technology of nonylphenol, which is applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of small contribution of abundance, poor reproducibility of detection results, and inappropriate quantitative detection, and achieves low detection limit, improved detection, etc. Selectivity and sensitivity, the effect of high sensitivity
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example 1
[0033] Example 1: Detection of nonylphenol content in total influent samples of sewage treatment plants
[0034] (1) Extraction and enrichment of nonylphenol
[0035] ①Solid-phase extraction column: According to the characteristics of the complex matrix of the sewage sample, the extremely low content of the target substance, and the large interference, the Oasis from the American Waters Company was selected. HLB (Hydrophilic-LipophilicBalance) type hydrophilic-lipophilic equilibrium solid phase extraction column, packing 60mg, volume 3cc.
[0036] ② Activation of the solid phase extraction column: first wet the activated SPE column with 1ml of acetone + n-hexane eluent with a volume ratio of 1:1, and then rinse the packing with 5ml of ultrapure water with a resistivity greater than 18.2MΩ / cm.
[0037] ③Sampling: take 50 mL of sewage sample, acidify to pH=2-3, control the sample loading speed to be 2-3 mL / min, and make all the samples pass through the SPE column.
[0038] ④D...
example 2
[0045] Example 2: Detection of nonylphenol content in clean water pool samples of reclaimed water treatment plant
[0046] (1) Extraction and enrichment of nonylphenol
[0047] ①Solid-phase extraction column: According to the characteristics of the complex matrix of the regenerated water sample, the extremely low content of the target substance, and the large interference, the Oasis of American Waters Company was selected. HLB (Hydrophilic-Lipophilic Balance) type hydrophilic-lipophilic balance solid phase extraction column, packing 60mg, volume 3cc.
[0048] ② Activation of the solid phase extraction column: first wet the activated SPE column with 1ml of acetone + n-hexane eluent with a volume ratio of 1:1, and then rinse the packing with 5ml of ultrapure water with a resistivity greater than 18.2MΩ / cm.
[0049] ③Sampling: take 100 mL of regenerated water sample, acidify to pH=2-3, control the sample loading speed to be 4-5 mL / min, and make all the samples pass through the ...
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