Raws li kev siv scenarios, ceev COD analyzers tuaj yeem muab faib rau hauv cov chaw soj ntsuam portable, cov chaw soj ntsuam lub rooj zaum, thiab cov cuab yeej saib xyuas hauv online. Portable field analyzers, xws li pHotoFlex portable ceev COD analyzer, muaj ib tug photometer, digester, thiab nrog COD reagents, haum rau ceev ceev nyob rau hauv lub teb los yog nyob rau hauv -site. SH-8 handheld ceev COD analyzer siv ultraviolet absorption spectroscopy, yuav tsum tsis muaj reagents, thiab yog ib qho yooj yim mus nqa. Benchtop laboratory analyzers, xws li DR1010 ceev COD analyzer, muaj ib tug ua tau - nyob rau hauv tus qauv nkhaus, txhawb ob lub hwj chim mov, thiab yog haum rau lub chaw soj nstuam ib puag ncig. Cov qauv hauv tsev xws li JH-TC201C thiab JH-TD401C feem ntau muaj lub ntsej muag kov thiab kev sib xyaw ua ke thiab lub raj xim xim.
Raws li kev ntsuas cov ntsiab lus, lawv feem ntau suav nrog cov cuab yeej raws li kev zom zaub mov sai sai thiab cov cuab yeej siv raws li ultraviolet absorption spectroscopy. Txoj kev digestion spectrophotometric sai sai tau tsim nyob rau hauv 1982 los ntawm Lanzhou Refining & Chemical Environmental Protection Instrument Research Institute. Nws lub hauv paus ntsiab lus yog raws li oxidation ntawm cov organic teeb meem hauv cov qauv dej los ntawm potassium dichromate nyob rau hauv muaj zog acid thiab catalyst tej yam kev mob. Tus nqi COD yog txiav txim siab los ntawm kev ntsuas cov xim hloov los ntawm kev txo cov Cr6+ rau Cr3+ ntawm ib lub wavelength tshwj xeeb, ua raws li lub teb chaws tus qauv HJ/T 399-2007. Ultraviolet absorption spectroscopy, xws li cov cuab yeej siv nyob rau hauv SH-8 handheld ceev COD analyzer, yuav tsum tsis muaj tshuaj reagents thiab ncaj qha correlates COD concentration los ntawm kev ntsuas qhov nqus dej hauv lub ultraviolet band.
Raws li kev ua haujlwm nthuav dav, cov ntsuas dej zoo tuaj yeem muab faib ua ib qho - parameter COD analyzers thiab multi- parameter water quality analyzers. Multi- parameter water quality analyzers tuaj yeem nthuav dav los ntsuas ntau yam dej tsis zoo xws li tag nrho cov phosphorus, tag nrho nitrogen, ammonia nitrogen, thiab cov hlau hnyav los ntawm cov kev pab cuam preset lossis modular tsim.
