Study on test paper for rapid detection of concentration of o-phthalaldehyde disinfectant
Release time:
2022-05-16
Objective To prepare a rapid test paper for detecting whether the concentration of o-phthalaldehyde (OPA) disinfectant meets the application requirements. Methods A variety of factors affecting the color reaction of the test paper were studied by comparing the color of the test paper. Results Na2 SO3, glycine,
The concentration of KH2 PO4 and methylene blue were 8, 80, 40 and 0. 04 g / L, respectively, and the detection time was 2 min. The addition of KH2 PO4 can greatly improve the color development rate. Dyeing the test paper into blue substrate is more conducive to color recognition. Conclusion The prepared test paper has a good detection effect on unilateral OPA products, and the stability and reproducibility of the test paper are good. The method is simple, fast and feasible.
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