恒波长同步扫描固体基质室温磷光法测定水样中的咔唑

Determination of carbazole in water by synchronous scanning with solid-substrates room temperature phosphorescence

本文采用同步扫描固体基质室温磷光（SS-RTP）法测定水样中的咔唑.以β-环糊精修饰滤纸为固体基质,KI为重原子,考查咔唑在芴,7,8-苯并喹啉,苊,蒽等多环芳烃（PAHs）存在下同步扫描的最优条件,选择最佳的△λ值为150nm,建立咔唑的恒波长同步扫描固体基质室温磷光分析方法.咔唑的线性范围是6.30ng·mL^-1～1.67μg·mL^-1,检出限为6.30ng·mL^-1,相对标准偏差（RSD）为3.67%,回收率为94%～109%.该方法简便快速,无需预分离,与常规激发和发射光谱相比分辨力显著提高.

Carbazole was determined by synchronous scanning with solid - substrates room temperature phosphores- cence （ SS - RTP）. Synchronous scanning spectrums of carbazole in presence of fluorene, 7,8 - benzoquinoline and other polycyclic aromatic hydrocarbons（PAHs） were obtained using potassium iodine as heavy atom salt perturba- tion and β - cyclodextrin modified filter paper as solid substrates. Some conditions were examined, including drying time （ t = 4.5 min）, heavy atom （ V = 10 μL） and the constant wavelength interval （ △λ = 150nm）. Constant wavelength interval synchronous phosphorescence spectrum of carbazole was studied. Linearity range is 6.30ng · mL^-1 - 1.67μg · mL^-1 with limit of detection 6.30ng μ mL^-1, the relative standard derivation is 3.67% and the recovery rate is 94% - 109%. The method is convenience and rapid without separation.