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- W2348646282 abstract "In acidic medium,neutral red can directly reacts with nitrite to form a new compound with no fluorescence.But the protonated form(NRH+) of the dye does not form an inclusion complex with β-cyclodextrin,only the neutral form(NR) can.After the pH of the solution is adjusted to 9.6 by adding NaOH,the fluorescence intensity of neutral form(NR) is largely enhanced because of the formation of inclusion complex.A new fluorescent spectrophotometry based on this principle has been developed to determine trace nitrite.Its maximum excitation wavelength is 451 nm,and the maximum emission wavelength is 576 nm.The linear range,detection limit and relative standard deviation were 4～160 μg/L,1.58 μg/L and 1.2%,respectively.This method has high sensitivity and selectivity.It has been used to determine nitrite in different water samples with satisfactory results." @default.
- W2348646282 created "2016-06-24" @default.
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- W2348646282 date "2011-01-01" @default.
- W2348646282 modified "2023-09-25" @default.
- W2348646282 title "Fluorescence quenching method for the determination of trace nitrite with neutral red by sensitizing effect of β-cyclodextrin" @default.
- W2348646282 hasPublicationYear "2011" @default.
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