John Hendricks

2 Questions 2 Answers 0 Followers

Questions related from John Hendricks

What is the stability of 1% N-(1-naphthyl)ethylene-1,2-diamine dihydrochloride (NEDA) solution?

I am measuring primary aromatic amines by UV-VIS and using the NEDA solution as my coupling reagent. The method says that the reagent needs to be made fresh every day. However, the solution is...

01 March 2024 6,528 2 View

Trace analysis of BTEX in n-Butyl acetate by GC-FID

I need to do trace level analysis of BTEX with a GC/FID down to 1 ppm. The problem I keep running into is that my samples are all in 40% n-Butyl acetate (can't change that since they come into the...

01 January 1970 7,278 4 View