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Total nitrogen pre-shirya reagents
Total nitrogen pre-shirya reagents
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1. samfurin gabatarwa
Hanyar gwaji mai sauƙi ta hanyar tunani ga hanyar gwajin chromium nitrate, wanda aka haɓaka jimlar nitrogen (1 ~ 150mg / L) gwajin reagent, wanda ke gano tsawon raƙuman ruwa na 410nm na yankin haske mai gani, ƙananan tasirin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙaranc
2. Ka'idodin fasaha
A karkashin yanayin alkali, bayan samfurin ruwa ya narke da potassium sulfate, duk abubuwan da ke dauke da nitrogen suna canzawa zuwa polynitrate. Bayan cire ƙarin chlorine da oxidative abubuwa tare da sodium pyrosulfate, a cikin matsakaicin kafofin watsa labarai mai ƙarfi, polynitrate yana amsawa tare da chromium acidification don samar da rikitarwa mai rawaya.
The absorption a karkashin 410nm wavelength da jimlar nitrogen mayar da hankali a cikin 1 ~ 150mg / L (N) mayar da hankali. Ta hanyar zana daidaitattun aiki curve, za a iya daidaita yawan nitrogen matattarar a samfurin.
1 ~ 150mg / L (a cikin N).
4. Aikace-aikace
Ana amfani dashi don auna jimlar darajar nitrogen a samfuran ruwa kamar ruwan ƙasa, ruwan ƙasa, ruwan sharar gida da ruwan sharar gida na masana'antu.
5. Amfani
1） Da farko sanya biyu tsabta hannu, cire akalla 2 alkaline narkewa bututun (HR) da kuma buɗe duk murfin, daya daga cikinsu ƙara 0.50 mL ultra tsabta ruwa (idan babu ruwa mai tsabta, za a iya sayar da ruwa distilled maimakon) (wannan ne blank bututun), da sauran ƙara 0.50mL da za a gwada kamar mafita (wannan ne samfurin bututun).
2） An ƙara kunshin jimlar nitrogen (I) (HR) reagent a cikin bututun narkewa da aka ƙara a cikin blank ko samfurin ruwa, rufe murfin kuma ƙarfafa shi (saboda matsin lamba a cikin bututun narkewa yana da sauƙin haifar da zuba lokacin narkewa, don haka a lokacin ƙarfafawa ya kamata a tabbatar da cewa murfin ba shi da mahimmanci ko sauƙi). Juya sama da ƙasa sau da yawa don yin mafita da reagents a cikin bututun daidai.
3） Saita porous resolver don narkewa zazzabi 120 ℃, narkewa lokaci 30min. Bayan samun zafin jiki, sanya duk shirye-shiryen bututun narkewa a cikin ramin mai porous, danna Start Timing button, jira har sai samfurin narkewa ya kammala.
4） Bayan da porous resolver timing ya kammala, cire bututun narkewa (kula da amfani da zafi insulation hannu a lokacin aiki), sanya a kan katako ko karfe gwajin bututun rack (ba ya dace don amfani da zafi juriya filastik gwajin bututun rack), jiran narkewa bututun sanyaya zuwa zafin jiki na dakin. Idan ganowa lokaci bukatun ne mai tsanani, za a iya sanya sanyaya 5min bayan sanya, a nutsar da ruwa na famfo ko wanke kasa na bututun narkewa, don sa saurin sanyaya na bututun narkewa.
5） Bude murfin sanyaya zuwa zafin jiki na dakin (kula da matsin lamba na iska), ƙara kunshin jimlar nitrogen (II) (HR) reagent daban-daban, kuma rufe murfin sama da ƙasa da sauya da kyau 15S. Jira tsayawa da 3min.
6） Sa'an nan bude murfin don ƙara 1 kunshin total nitrogen (III) (HR) reagent, rufe murfin sama da ƙasa da sauya da kyau 15S, tsaya da jira 2min.
7） Shirya daidai adadin acid launi bututun da aka yi amfani da alkaline bututun, canja ruwa daga 2.00mL alkaline bututun zuwa daidai acid launi bututun, rufe murfin, sama da ƙasa juya sau 10 don yin ruwa daidai, tsaya jira 5min. (Lura: acid launi tubu launi tsari zai zama mai yawa zafi, sa thermal insulation hannu lokacin juyawa shake-shake)
8） Daidaita spectrophotometer wavelength zuwa 410nm, daidaita sifili tare da blank bututun, gwada samfurin bututun absorbance darajar. An lissafa jimlar matattarar nitrogen a samfurin bisa ga daidaitattun curves da ke akwai.
6, Standard curve zane hanyar
① Tsarin daidaitaccen jerin bayani: 1.00, 2.00, 5.00, 10.00, 15.00 mL 1000mg / L Municipal sayen kasa misali
Samfurin jimlar nitrogen misali mafita zuwa 5 tsabtace 100 mL karfin kwalba, da ultra tsabta ruwa diluted zuwa layin sikelin da kuma rawa da kuma samun 10.0, 20.0, 50.0, 100.0, 150.0 mg / L jerin jimlar nitrogen madaidaicin liquor, bi da bi;
② Zane misali curve: dauki 6 jimlar nitrogen acid bututun narkewa (HR), kara 2.00 mL ultra tsabta ruwa da kuma jerin jimlar nitrogen calibration, bi da matakan ganowa a sama sashi na 5 (amfani da hanyar), za a iya samun jerin jimlar nitrogen calibration daidai absorption darajar A, da jimlar nitrogen calibration da matattarar C a matsayin longitudinal coordinate, daidai absorption darajar A a matsayin cross coordinate don zane, linear dacewa da samuwa misali curve formula.
An iya lissafa jimlar ƙimar nitrogen a cikin samfurin ruwa ta hanyar maye gurbin ƙimar absorption na ainihin samfurin da aka auna a cikin formula (idan kayan aikin yana tallafawa tsarin gwajin ginin kansa, za a iya shigar da daidaitaccen curve a cikin shirin, kiran gwajin shirin zai nuna jimlar ƙimar nitrogen kai tsaye, ba tare da buƙatar lissafi ba).
7. Lura
Idan photometer da aka yi amfani da ya dace da pre-shigar da bututun da zagaye rami samfurin tafkin, za a iya kai tsaye amfani da wannan pre-shigar da bututun a matsayin launi comparison bututun; Idan ba a samu ba, za a iya sha ruwa da aka narke zuwa 1cm a cikin farfajiyar farfajiyar farfajiyar farfajiyar farfajiya;
Idan dakin gwaje-gwaje na mai amfani yana da kayan aikin DR jerin kayan aiki (kamar DR3900 / DR6000 / DR900 / DR5000 / DR2400, da dai sauransu), babu buƙatar zana daidaitaccen curve, za a iya kira shirin gwajin nitrogen na gaba ɗaya (lambar shirin 394) kai tsaye don daidaita gwajin sifili.
Wannan reagent yana da ƙarfin tsangwama tsangwama ga nau'ikan ƙarfe ions, amma fiye da 1000mg / L total chlorine ko 60mg / L total bromine a cikin samfurin zai yi tsangwama ga samfurin gwaji, idan samfurin da ake bincika yana dauke da chlorine bromine sosai, ya kamata a zaɓi wasu hanyoyin gwaji don bincika
A lokacin gwajin, reagent yana sakin ƙananan adadin gas na sulfur dioxide, saboda haka ya kamata a yi amfani da shi a cikin yanayin da ke da iska mai kyau.
Wannan gwajin ya ƙunshi mafi girman matakan sulfuric acid, a lokacin gwajin ya kamata a yi matakan kariya na mutum, bayan gwajin ya kamata a wanke hannayen da ruwa mai tsabta. A lokacin samfurin narkewa, porous resolver zafin jiki ne mafi girma, ya kamata a kula da hana ƙonawa;
Total nitrogen gwajin sharar gida ba za a zuba a cikin wastewater, ya kamata a tattara tare, da amincewa da cancanci na'urar mayar da hankali.
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