HJ 1453-2026 "Ọdịdị Mmiri - Mkpebi nke Cu, Pb, Cd, Ni na Cr - Graphite Furnace Atomic Absorption Spectrophotometry" ka ewepụtara n'ihu ọha dị ka ntọala dị mkpa maka ịchọpụta ọla dị arọ na ịdị mma mmiri ma ga-amalite ịrụ ọrụ na Mee 1, 2026. Ọkọlọtọ a na-enye nkọwapụta teknụzụ a pụrụ ịdabere na ya na nke a pụrụ ịtụkwasị obi maka mkpebi nke ihe ise dị arọ dị mkpa na mmiri dị n'elu ala, mmiri dị n'okpuru ala, nsị ụlọ na mmiri mkpofu ụlọ ọrụ mmepụta ihe. N'agbanyeghị nlekọta siri ike na mkpa nchọpụta ọkọlọtọ dị elu, graphite oven atomic absorption spectrophotometry ga-aghọ ụzọ nkwado dị mkpa maka nlekota ígwè dị arọ dị mma na mmiri yana nnukwu mmetụta ya, oke nchọpụta dị ala na njirimara tozuru okè na nke kwụsiri ike.
BFRL WFX-220A Atomic Absorption Spectrophotometer
Nnwale 1
1.1 Nkwadebe ngwa na ihe eji eme ihe
Igwe onyonyo WFX-220A nke na-amịkọrọ atọm: BFRL;
Ngwa ndakwa nri na microwave na ihe na-ekpo ọkụ eletrik nwere ọgụgụ isi na-achịkwa okpomọkụ: Yiyao Technology, M3;
ihe ngwọta ọkọlọtọ nke Cu, Pb, Cd, Ni, Cr (1000 μg/mL); Nitric acid, hydrochloric acid, na palladium nitrate bụcha ihe dị ọcha karịa.
1.2 Nkwadebe ihe atụ
Mgbe ị chịkọtachara ihe nlele ahụ, tinye nitric acid kwesịrị ekwesị iji gbanwee acidity ahụ ka ọ bụrụ pH ≤2, debe ya n'ebe gbara ọchịchịrị, ma tụọ ya n'ime ụbọchị iri anọ.
Tụọ nke ọma 25.0 mL nke ihe nlele mmiri dị n'elu n'ime tankị mgbaze ngwa ngwa na microwave, tinye 3 mL nke nitric acid na 1 mL nke hydrochloric acid, wee tinye ha n'ime igwe mgbaze ngwa ngwa maka mgbaze (Tebụl 1). Mgbe ị gbasịrị nri, jụọ oyi ruo okpomọkụ ụlọ, tinye ya na igwe mgbaze ọkụ eletrik, wee gbapụ mmiri ahụ ka ọ kpọọ nkụ. Wepụ ya ma jụọ oyi, saa mgbidi dị n'ime ya na 1% nitric acid ma ọ dịkarịa ala ugboro atọ, nyefee ya na tube colorimetric 25ml, gwakọta olu ya na 1% nitric acid na reticle, maa jijiji nke ọma, a ga-anwale ya.
Tebụl 1 Usoro ikpo ọkụ maka mgbaze na microwave
| Okpomọkụ mgbaze | Oge ọkụ (nkeji) | Oge nchekwa (nkeji) |
| Okpomọkụ ụlọ →120℃ | 0 | 3 |
| 120 →150℃ | 0 | 3 |
| 150→180℃ | 0 | 20 |
1.3 Ọnọdụ nnwale
E jiri ihe nyocha nke atom absorption spectroscopy mee ihe, a na-egosikwa ọnọdụ ntụaka ngwaọrụ na Tebụl nke 2 n'okpuru.
Tebụl 2 Ọnọdụ ntụaka nke ngwa ọkụ graphite
| Ihe | Cu | Pb | Cd | Ni | Cr |
| Ọkụ oriọna | 3 | 3 | 3 | 3 | 3 |
| Ogologo ebili mmiri | 324.7 | 283.3 | 228.8 | 232 | 357.9 |
| Spektral bandwit | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Okpomọkụ nkụ (℃)/Oge (s) | 120/30 | 100/30 | 100/30 | 100/30 | 100/30 |
| Okpomọkụ ntụ (℃)/Oge (s) | 900/30 | 550/15 | 550/15 | 800/15 | 850/15 |
| Okpomọkụ atomization (℃)/Oge(s) | 2300/3 | 2200/3 | 2000/3 | 2500/4 | 2500/3 |
| Olu ịgba ọgwụ (μL) | 20 | 20 | 20 | 20 | 20 |
| Olu ntinye Matrix Improver (μL) | 5 | 5 | 5 | 5 | 5 |
| Usoro mmezi ndabere | Oriọna Deuterium | Oriọna Deuterium | Oriọna Deuterium | Oriọna Deuterium | Oriọna Deuterium |
Nhazi nke matrix improver: tụọ 0.1g nke palladium nitrate, tinye 1mL nke nitric acid (2.1) ka ọ gbazee, ma tinye olu ya na 100mL site na iji mmiri ụlọ nyocha.
Ihe osise nke usoro ọrụ: A gwakọtara ngwọta ọkọlọtọ nke Cu, Pb, Cd, Ni na Cr (1000 μg/mL) nke dị n'ahịa site na nzọụkwụ, kwadebe ya na 50 μg/L, 10 μg/L, 1 μg/L, 30 μg/L, na 10 μg/L nke ngwọta ojiji, e jikwa ihe nlele onwe mee usoro nhazi dilution otu-isi.
2 Nsonaazụ na mkparịta ụka
N'okpuru ọnọdụ nnwale ahọpụtara, mmekọrịta ahịrị dị mma na 0~50μg/L maka Cu, 0~10μg/L maka Pb, 0~1μg/L maka Cd, 0~30μg/L maka Ni, na 0~10μg/L maka Cr, nke nwere ike iru ihe karịrị 0.999; E gosiri usoro nhazi ahụ na Foto 1~ Foto 5 n'okpuru.
Fig. 1. Usoro nhazi Cu
Fig. 2 Usoro nhazi Pb
Fig. 3 Usoro nhazi Cd
Fig. 4 Usoro nhazi Ni
Fig. 5 Usoro nhazi Cr
E kwadebere ihe ngwọta efu ahụ dịka usoro nnwale si dị, e mekwara nha iri na otu, oke nchọpụta nke usoro mgbakọ na mwepụ bụ 17.34pg maka Cu, 1.51pg maka Pb, 0.42pg maka Cd, 17.77pg maka Ni, na 1.28pg maka Cr.
A nwalere ihe nlele mmiri dị n'elu ala a gwọrọ n'okpuru ọnọdụ nnwale ahọpụtara, a na-egosikwa nsonaazụ ule ahụ na Tebụl nke 3 n'okpuru.
Tebụl nke 3Nsonaazụ nchọpụta nke ihe nlele mmiri dị n'elu
| Ihe | Ihe Nlereanya nke 1 | Ihe Nlereanya nke Abụọ | ||
| Ụkpụrụ a tụrụ (μg/L) | Ọnụego mgbake gbasiri ike （%） | Ụkpụrụ a tụrụ (μg/L) | Ọnụego mgbake gbasiri ike （%） | |
| 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 |
A nwalere ihe ntụaka Cu, Pb, Cd, Ni, na Cr ugboro asaa n'usoro, a na-egosikwa nsonaazụ ule ahụ na Tebụl nke 4 n'okpuru.
Tebụl nke 4Nsonaazụ ihe ntụaka Cu, Pb, Cd, Ni, na Cr
| ihe | nọmba | uru edobere (μg/L) | Ntụle (μg /L) | Ngbanwe ọkọlọtọ dị n'etiti （%） |
| 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 |
Site na Tebụl 3 na 4, mgbake nke Cu, Pb, Cd, Ni na Cr n'ime ihe nlele mmiri dị n'elu bụ 91.2% ~ 105.5%, na mgbanwe ọkọlọtọ nke ihe nlele ọkọlọtọ bụ 1.5% ~ 2.6% maka nha nha asaa yiri ibe ha.
Mmechi 3
Dịka ihe achọrọ na "Ọkwa Ogo Gburugburu Ebe Obibi Mmiri Eluigwe" (GB 3838-2002), ọdịnaya nke Cu, Pb, Cd na Ni n'ime mmiri dị n'elu na-emezu ọkọlọtọ mmiri nke Klas II. N'oge a, ejiri WFX-220A atomic absorption spectrophotometer chọpụta Cu, Pb, Cd, Ni na Cr na ntụnyere HJ 1453-2026 "Nchọpụta nke Cu, Pb, Cd, Ni na Cr n'ime Ogo Mmiri site na Graphite Furnace Atomic Absorption Spectrophotometry", nsonaazụ nke ọkwa oke nchọpụta, izi ezi na nkenke dị mma.
Ngwa nyocha atọm WFX-220A nwere nnukwu mmetụta, ezigbo izi ezi na ọtụtụ ngwa dị iche iche. Ihe kachasị pụta ìhè bụ oke akpaghị aka, ọkụ ọkụ na graphite nwere ike ime mgbanwe akpaka otu pịa, yana njikwa mmiri dị elu na ngwanrọ nwere ọgụgụ isi yana nchekwa data ọkachamara arụnyere n'ime ya, ọrụ dị mfe ma dị irè. N'otu oge ahụ, ngwaọrụ ahụ na-eji nhazi modular maka mmezi kwa ụbọchị, ma nwee ọtụtụ mkpọchi nchekwa na nchekwa njikwa okpomọkụ nke na-ejikọta ngwanrọ na ngwaike iji hụ na ọrụ adịghị mma. Na mgbakwunye, ọ na-akwadokwa usoro ọkụ dị elu, usoro hydride na ọtụtụ ndọtị autosampler, nke nwere ike izute mkpa nke nyocha ígwè na nchekwa gburugburu ebe obibi, nri na ọgwụ na mpaghara ndị ọzọ.
Oge ozi: Mee-15-2026