Kev txiav txim siab ntawm Electroplating Wastewater Samples rau Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob

Kev txiav txim siab ntawm Electroplating Wastewater Samples rau Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob

Kev txiav txim siab ntawm kev ntsuas ntsuas

(1) Kev teeb tsa ntawm cov yam ntxwv zoo tib yam: qhov sib txawv wavelength sib txawv △ λ Raws li qhov rhiab heev, tab sis qhov kev daws teeb meem txo qis, ua rau muaj kev hloov pauv ntawm xoom kev sib tshuam taw tes λ Nws yog ib qho tsim nyog xaiv 10nm. Xaiv ABS absorbance, xaiv ceev scanning, thiab teem wavelength scaling amplification rau 10 μ M / cm, cov ntaubntawv povthawj siv ntau yam yog teem rau 0-9, lub wavelength ntau yog teem rau 500-610nm, thiab lub slit dav yog 2nm ua.

(2) Kev teeb tsa ntawm qhov thib ob derivative spectral tsis: tshwj tsis yog tias cov ntaubntawv povthawj siv tau teeb tsa rau - 0.5 ~ 0.5, lwm yam kev mob yog tib yam li cov tsis muaj spectral ntau [3].

2.3 Cov txheej txheem xeem

2.3.1 Kev txiav txim siab ntawm cov qauv dej khib nyiab

Siv 25mL ntawm cov qauv dej thiab muab tso rau hauv 50mL colorimetric raj. Yog tias cov qauv dej yog huab, 0.45 tuaj yeem siv μ M microporous organic lim membrane iav funnel pom. Yog tias tus qauv concentration siab, nws tuaj yeem diluted kom tsim nyog. Noj 5mL ntawm 0.1 feem pua ​​- (2-pyridylazo) -2-naphthol tov, 5mL ntawm pH 4.8 acetic acid sodium acetate buffer, 10mL ntawm ethanol, co zoo, thiab tsim xim rau 10 feeb. Siv reagent dawb paug raws li kev siv, siv 1cm iav tais rau xim sib piv, thiab ntsuas qhov thib ob derivative spectrum nyob rau hauv cov txheej txheem ntawm lub ntsuas. Sau qhov kev ncua deb ntawm lub ncov mus rau lub hauv paus ntawm wavelengths 545nm, 557nm, thiab 595nm, thiab xam cov concentrations ntawm npib tsib xee, zinc, thiab tooj liab siv tus qauv nkhaus.

2.3.2 Kev kos duab ntawm cov qauv nkhaus

Ntxiv {{0}}, 0.20, 0.50, 1.00, 2.{{8 }}, 3.{{10}}, 5.00, thiab 6. {33}}mL colorimetric raj, thiab ntxiv dej rau ib ntim ntawm 25mL los npaj peb txheej txheem series daws teeb meem. Lub sijhawm no, cov ntsiab lus ntawm Ni2 ntxiv , Zn2 ntxiv , thiab Cu2 ntxiv rau hauv cov txheej txheem kev daws teeb meem yog 0, 1.0, 2.5, 5.0, 10.0, 15.0, 25.0, thiab 30.0 μ g . Ua qhov thib ob derivative spectrometry raws li cov kauj ruam ua haujlwm saum toj no.

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