COLORIMETRIC DETERMINATION OF AQUEOUS NITRATE CONCENTRATION
申请人:Hach Company
公开号:US20180031535A1
公开(公告)日:2018-02-01
A method of measuring nitrate concentration in an aqueous sample include mixing the aqueous sample with a water-soluble thioether compound including a chromophore group in the presence of a water soluble catalyst; measuring a color change, and correlating the color change to nitrate concentration.