QYC0D系列COD消解器執(zhí)行HJ828-2017水質(zhì)化學(xué)需氧量的測定,重鉻酸鹽法,分析方法規(guī)范地制定了水質(zhì)化學(xué)需氧量COD(cr)的測定步驟,嚴(yán)格地規(guī)定了方法的加熱消解時間、溶液酸度、氧化劑和催化劑的用量等條件指標(biāo)。顯而易見,水質(zhì)COD(cr)的測定是有嚴(yán)格的條件規(guī)定,違背了條件規(guī)定進(jìn)行操作,就會影響測定的準(zhǔn)確性。遵循了標(biāo)準(zhǔn)(ISO)和國家標(biāo)準(zhǔn)(HJ)的基本原則,保證了回流加熱微沸2小時的消解操作,試劑溶液的配制和加入量都和HJ法*,確保可靠精確的分析結(jié)果。QYC0D series COD digesters carry out the determination of chemical oxygen demand (COD) of water quality from HJ828 to 2017. The dichromate method and analytical method standardize the determination steps of COD (cr) of water quality. The heating digestion time, acidity of solution, dosage of oxidant and catalyst of the method are strictly stipulated. Obviously, the determination of COD (cr) in water quality is strictly conditioned. Operating in violation of conditional requirements will affect the accuracy of the determination. Following the basic principles of International Standard (ISO) and National Standard (HJ), the digestion operation of reflux heating micro-boiling for 2 hours is ensured. The preparation and addition of reagent solution are consistent with HJ method, and the reliable and accurate analysis results are ensured.