Spectrophotometry yog qhov nqus ntawm lub teeb ntawm ib lub qhov taw qhia tshwj xeeb lossis hauv ib thaj tsam ntawm wavelengths rau kev ntsuas los yog muaj nuj nqis ntawm cov khoom. (1) 200-380 nm UV thaj av, (2) 380-780 nm thaj chaw pom, (3) 2.5-25 [mu] m (nyob rau hauv cov nqe lus ntawm nthwv nab npawb, 4000 cm <-1> -400 cm <-1>) cheeb tsam lub teeb uas muaj qhov pom ntawm sab nraud. Cov khoom siv yog ib qho ultraviolet spectrophotometer, pom spectrophotometer (los yog colorimeter), ib qho chaw spectrophotometer , los yog ib qho chaw atomic absorption spectrophotometer. Yuav kom paub meej thiab meej ntawm qhov kev ntsuas, txhua yam seev yuav tsum ua tib zoo xyuas raws li lub teb chaws cov cai tshawb xyuas metrological los yog cov cai hauv daim ntawv no.
Lub tuam txhab tshwj xeeb hauv kev muag khoom ntawm spectrophotometers , txais tos cov neeg siv khoom uas muaj qhov xav tau los tham nrog thiab yuav khoom, peb yuav muab koj nrog sincere cov kev pab cuam thiab cov khoom zoo, nrog rau cov nqi qis dua.
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