Methods have also been developed to determine glutaraldehyde concentrations in water and aqueous solutions. For high levels of glutaraldehyde in aqueous solutions (i.e., solutions of 10–50%), the standard method involves titration with 0.5 N hydroxylamine hydrochloride. To determine glutaraldehyde concentrations at lower levels, the following methods may be used: colorimetric determination using MBTH; titration after reaction with sodium bisulfite, and GC analysis. These methods are summarized in Table 7-1.

Colorimetric determination of glutaraldehyde in water is performed by adding the sample to a solution of MBTH and measuring the absorbance at 605 or 610 nm. While the presence of other ketones or aldehydes may interfere, this method is usable for glutaraldehyde concentrations of 0.5–10 ppm in water (NICNAS 1994).

원리는 이렇게 찾았는데 자세한 실험 프로토콜이 안나와서요...
MBTH를 sample에 첨가하면 스펙트로미터 605 ~ 610에서 글루타르알데히드를 0.5 ~ 10ppm 까지 검출 할 수 있다고 나와있는데 MBTH는 얼마나 넣어야 하는지? sample은 얼마를 넣고 반응은 실온이나 .. 어떤 상황에서 몇분을 해야하는지??? 등 구글에서 프로토콜을 아무리 찾아도 안나와서 혹시 아는 분 있나요?

https://www.atsdr.cdc.gov/toxprofiles/tp208-c7.pdf

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