HJ 1453-2026 "Dej Zoo - Kev Txiav Txim Siab ntawm Cu, Pb, Cd, Ni thiab Cr - Graphite Furnace Atomic Absorption Spectrophotometry" tau raug tso tawm ua lub hauv paus tseem ceeb rau kev kuaj pom cov hlau hnyav hauv dej zoo thiab yuav siv tau rau lub Tsib Hlis 1, 2026. Cov qauv no muab cov lus qhia txog kev siv tshuab uas muaj cai thiab txhim khu kev qha rau kev txiav txim siab ntawm tsib lub ntsiab lus hlau hnyav tseem ceeb hauv dej saum npoo av, dej hauv av, dej phwj hauv tsev thiab dej khib nyiab hauv kev lag luam. Thaum muaj kev saib xyuas nruj dua thiab cov kev xav tau kev kuaj pom tus qauv siab dua, graphite furnace atomic absorption spectrophotometry yuav dhau los ua ib txoj hauv kev txhawb nqa tseem ceeb rau kev saib xyuas cov hlau hnyav zoo hauv dej nrog nws qhov kev nkag siab siab, qhov txwv tsis pub kuaj pom thiab cov yam ntxwv laus thiab ruaj khov.
BFRL WFX-220A Atomic Absorption Spectrophotometer
1 Kev Sim
1.1 Kev npaj cov cuab yeej thiab cov tshuaj reagent
WFX-220A Atomic Absorption Spectrophotometer: BFRL;
Lub tshuab zom zaub mov microwave thiab txhawb nqa kev tswj kub ntse hluav taws xob: Yiyao Technology, M3;
Cov tshuaj txheem ntawm Cu, Pb, Cd, Ni, Cr (1000 μg/mL); Nitric acid, hydrochloric acid, thiab palladium nitrate yog cov khoom huv si zoo dua.
1.2 Kev npaj qauv
Tom qab sau cov qauv, ntxiv cov kua qaub nitric kom tsim nyog los kho qhov acidity rau pH ≤ 2, khaws cia rau hauv qhov chaw tsaus ntuj, thiab ntsuas nws hauv 40 hnub.
Ntsuas kom raug 25.0 mL ntawm cov qauv dej saum npoo av hauv lub thawv zom zaub mov microwave, ntxiv 3 mL ntawm nitric acid thiab 1 mL ntawm hydrochloric acid, thiab muab tso rau hauv lub thawv zom zaub mov microwave rau kev zom zaub mov (Rooj 1). Tom qab zom zaub mov, txias rau qhov kub thiab txias hauv chav tsev, muab tso rau ntawm lub thawv zom zaub mov hluav taws xob, thiab ua kom cov tshuaj yaj kom ze li qhuav. Tshem tawm thiab txias, ntxuav phab ntsa sab hauv nrog 1% nitric acid tsawg kawg 3 zaug, hloov mus rau hauv lub raj mis 25ml colorimetric, dilute qhov ntim nrog 1% nitric acid rau ntawm reticle, co zoo, thiab kuaj.
Rooj 1 Cov txheej txheem ua kom sov zom zaub mov hauv lub tshuab hluav taws xob microwave
| Qhov kub ntawm kev zom zaub mov | Lub sijhawm cua sov (min) | Tuav lub sijhawm (min) |
| Chav sov → 120 ℃ | 0 | 3 |
| 120 → 150 ℃ | 0 | 3 |
| 150 → 180 ℃ | 0 | 20 |
1.3 Tej yam kev sim
Siv cov atomic absorption spectroscopy rau kev tsom xam, thiab cov xwm txheej siv rau cov cuab yeej tau qhia nyob rau hauv Rooj 2 hauv qab no.
Rooj 2 Cov xwm txheej siv ntawm cov cuab yeej siv rau hauv qhov cub graphite
| Khoom | Cu | Pb | Cd | Ni | Cr |
| Lub teeb tam sim no | 3 | 3 | 3 | 3 | 3 |
| Qhov ntev ntawm lub zog | 324.7 | 283.3 | 228.8 | 232 | 357.9 |
| Cov bandwidth ntawm spectral | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Qhov kub thiab txias kom qhuav (℃) / Lub sijhawm (s) | 120/30 | 100/30 | 100/30 | 100/30 | 100/30 |
| Kub ntawm cov tshauv (℃) / Lub Sijhawm (s) | 900/30 | 550/15 | 550/15 | 800/15 | 850/15 |
| Kub ntawm kev ua kom lub cev tsis sib haum (℃) / Lub Sijhawm (s) | 2300/3 | 2200/3 | 2000/3 | 2500/4 | 2500/3 |
| Txhaj tshuaj ntim (μL) | 20 | 20 | 20 | 20 | 20 |
| Matrix improver txhaj tshuaj ntim (μL) | 5 | 5 | 5 | 5 | 5 |
| Txoj kev kho keeb kwm yav dhau los | Deuterium teeb | Deuterium teeb | Deuterium teeb | Deuterium teeb | Deuterium teeb |
Kev teeb tsa ntawm cov tshuaj txhim kho matrix: hnyav 0.1g ntawm palladium nitrate, ntxiv 1mL ntawm nitric acid (2.1) kom yaj, thiab teeb tsa qhov ntim rau 100mL nrog dej kuaj.
Daim duab kos ntawm cov kab ua haujlwm: Cov tshuaj txheem txheem ntawm Cu, Pb, Cd, Ni thiab Cr (1000 μg/mL) uas muaj nyob hauv khw tau raug diluted ib kauj ruam zuj zus, npaj rau hauv 50 μg/L, 10 μg/L, 1 μg/L, 30 μg/L, thiab 10 μg/L ntawm cov tshuaj siv, thiab cov kab teeb tsa dilution ib qho tau ua tiav nrog lub autosampler.
2 Cov txiaj ntsig thiab kev sib tham
Nyob rau hauv cov xwm txheej sim xaiv, qhov kev sib raug zoo linear zoo ntawm 0 ~ 50μg / L rau Cu, 0 ~ 10μg / L rau Pb, 0 ~ 1μg / L rau Cd, 0 ~ 30μg / L rau Ni, thiab 0 ~ 10μg / L rau Cr, uas tuaj yeem ncav cuag ntau dua 0.999; Cov kab calibration tau qhia hauv Daim Duab 1 ~ Daim Duab 5 hauv qab no.
Daim Duab 1 Cu calibration curve
Daim Duab 2 Pb calibration curve
Daim Duab 3 Cd calibration curve
Daim Duab 4 Ni calibration curve
Daim Duab 5 Cr calibration curve
Cov tshuaj dawb paug tau npaj raws li txoj kev sim thiab 11 qhov kev ntsuas tau ua tiav, thiab qhov kev txwv ntawm txoj kev xam yog 17.34pg rau Cu, 1.51pg rau Pb, 0.42pg rau Cd, 17.77pg rau Ni, thiab 1.28pg rau Cr.
Cov qauv dej saum npoo av uas tau kho lawm tau raug sim raws li cov xwm txheej sim uas tau xaiv, thiab cov txiaj ntsig ntawm kev sim tau qhia nyob rau hauv Rooj 3 hauv qab no.
Rooj 3Kev txiav txim siab cov txiaj ntsig ntawm cov qauv dej saum npoo av
| Khoom | Qauv 1 | Qauv 2 | ||
| Cov nqi ntsuas (μg/L) | Tus nqi rov zoo dua qub （%) | Cov nqi ntsuas (μg/L) | Tus nqi rov zoo dua qub （%) | |
| Cu | 18.7 | 94.5 | 24.2 | 92.1 |
| Pb | 1.2 | 97.8 | 1.4 | 99.6 |
| Cd | <0.06 | 91.2 | <0.06 | 94.5 |
| Ni | 7.9 | 102.3 | 8.2 | 97.4 |
| Cr | 1.3 | 105.5 | 1.8 | 96.9 |
Cov ntaub ntawv siv Cu, Pb, Cd, Ni, thiab Cr tau raug sim 7 zaug sib law liag, thiab cov txiaj ntsig ntawm kev sim tau qhia nyob rau hauv Rooj 4 hauv qab no.
Rooj 4Cov txiaj ntsig ntawm cov khoom siv siv Cu, Pb, Cd, Ni, thiab Cr
| lub ntsiab lus | tus lej | tus nqi calibrated (μg/L) | Kev Ntsuas (μg /L) | Kev sib txawv ntawm tus qauv （%) |
| Cu | GSB 07-3186-2014 | 497±25 | 522.00 | 1.9 |
| Pb | GSB 07-3186-2014 | 0.241±0.012 | 0.243 | 2.1 |
| Cd | GSB 07-3186-2014 | 0.138±0.008 | 0.137 | 1.5 |
| Ni | GSB 07-3186-2014 | 258±14 | 253.4 | 2.6 |
Los ntawm Cov Lus Qhia 3 thiab 4, qhov rov qab los ntawm Cu, Pb, Cd, Ni thiab Cr hauv cov qauv dej saum npoo av yog 91.2% ~ 105.5%, thiab qhov sib txawv ntawm tus qauv yog 1.5% ~ 2.6% rau 7 qhov kev ntsuas sib luag.
3 Xaus Lus
Raws li cov kev cai ntawm "Tus Qauv Kev Zoo Ib Puag Ncig ntawm Dej Nto" (GB 3838-2002), cov ntsiab lus ntawm Cu, Pb, Cd thiab Ni hauv dej nto ua tau raws li tus qauv dej Class II. Lub sijhawm no, WFX-220A atomic absorption spectrophotometer tau siv los txiav txim siab Cu, Pb, Cd, Ni thiab Cr nrog rau kev xa mus rau HJ 1453-2026 "Kev Txiav Txim Siab ntawm Cu, Pb, Cd, Ni thiab Cr hauv Dej Zoo los ntawm Graphite Furnace Atomic Absorption Spectrophotometry", thiab cov txiaj ntsig ntawm qib kev ntes tau txwv, qhov tseeb ntawm cov qauv thiab qhov tseeb tau txaus siab.
WFX-220A atomic absorption spectrophotometer muaj kev rhiab heev, qhov tseeb zoo thiab ntau yam kev siv. Nws qhov tseem ceeb tshaj plaws yog qib siab ntawm kev ua haujlwm tsis siv neeg, lub cub tawg nplaim taws thiab graphite tuaj yeem ua tiav ib qho nias hloov pauv tsis siv neeg, ua ke nrog kev tswj hwm kev ntws siab thiab software ntse nrog cov ntaub ntawv kws tshaj lij ua ke, kev ua haujlwm yooj yim thiab ua haujlwm tau zoo. Tib lub sijhawm, lub cuab yeej siv tus qauv tsim rau kev saib xyuas txhua hnub, thiab muaj ntau qhov kev sib txuas lus kev nyab xeeb thiab kev tiv thaiv kub uas sib xyaw ua ke software thiab kho vajtse kom ntseeg tau tias kev ua haujlwm tsis muaj teeb meem. Tsis tas li ntawd, nws kuj txhawb nqa txoj kev nplaim taws kub siab, txoj kev hydride thiab ntau yam kev txuas ntxiv autosampler, uas tuaj yeem ua tau raws li qhov xav tau ntawm kev tshuaj xyuas hlau hauv kev tiv thaiv ib puag ncig, zaub mov thiab tshuaj thiab lwm yam teb.
Lub sijhawm tshaj tawm: Tsib Hlis-15-2026