冷原子荧光法测定中药中的痕量汞

本文应用冷原子荧光法，采用HNO3－H2O2的湿法消解体系，建立了中药中痕量汞的测定方法。同时，对样品的前处理方法和仪器工作条件进行了探讨和优化。在选定的实验条件下，测得检出限为0.03μg/L，用国标物质桃叶验证结果与推荐值一致；用于实际样品的测定获得了满意的结果。     

新的油井岩样荧光直照检测方法

本文从油井岩样及其氯仿浸出物的荧光光谱分析入手,对当前石油勘探系统中亟待改进的目视荧光直照检测方法进行了全面的实验和理论研究。     

Filterless Fluorometry with Enhanced Sensitivity

We describe a novel approach for fluorometry with light-emitting-diodes (LEDs) as excitation source that capitalizes on the principle of light shielding and total internal reflection to operate without optical filters. This scheme is practicable, demonstrated to significantly reduce the amount of excitation light overlapping the fluorescence signals at the photodetector, operated best with excitation light applied orthogonal to detection, and permitted higher measurement sensitivity of fluorophore emission.     

Traceability in Fluorometry—Part I: Physical Standards

The inter-instrument, inter-laboratory, and long-term comparability of fluorescence data requires the correction of the measured emission and excitation spectra for the wavelength- and polarization-dependent spectral irradiance of the excitation channel at the sample position and the spectral responsivity of the emission channel employing procedures that guarantee traceability to the respective primary standards. In this respect the traceability chain of fluorometry is discussed from a radiometrist’s point of view. This involves, in a first step, the realization of the spectral radiance scale, based on the blackbody radiator and electron storage ring, and the spectral responsivity scale, based on the cryogenic radiometer and their control via key comparisons of the national metrology institutes. In a second step, the characterization including state-of-the art uncertainties of the respective source and detector transfer standards such as tungsten strip lamps, integrating sphere radiators, and trap detectors used to disseminate these radiometric quantities to users of spectroscopic techniques is presented.     

荧光法测定补骨脂素和异补骨脂素

以溴代十六烷基三甲胺（ＣＴＭＡＢ）为胶束试剂，β－环糊精（β－ＣＤ）为包含试剂，在优化实验条件下，用荧光光度法测定了补骨脂中补骨脂素和异补骨脂素．线性范围分别为２×１０－９～８×１０－６ｇ／ｍＬ，２×１０－９～８×１０－７ｇ／ｍＬ；检出限分别为２．６７×１０－１１ｇ／ｍＬ和１．１５×１０－１１ｇ／ｍＬ．     

2,3—二氨基萘荧光光度法测定湘泉酒所用水源中的硒

在ｐＨ１．５－２．０酸性溶液中２，３－二氨基萘选择性与四价硒离子反应，生成４，５－苯并基硒脑绿色荧光物质，用环已烷萃取，其荧光强度与Ｓｅ＾４＋的含量成正比，可定量测定硒的含量。     

A sequential injection fluorometric procedure for rapid determination of total protein in human serum

A sensitive procedure for the quantification of total protein bovine serum albumen (BSA) in human serum was presented with sequential injection sampling and fluorometric detection. A few microliters of sample and fluorescamine solutions were aspirated into the holding coil to facilitate the reaction of protein with fluorescamine by giving rise to a blue-green-fluorescent derivative. The derivative was afterwards excited by a 400 nm radiation from a UV radiator, and the emitted fluorescence was monitored at the wavelength of 470 nm. By loading 5.0 μl of sample and 4.0 μl of fluorescamine solution 0.075% (m/v), a linear calibration graph was obtained within 0.3-12.5 μg ml⁻¹, and a detection limit (3σ) of 0.1 μg ml⁻¹ was achieved, along with a sampling frequency of 40 h⁻¹ and a R.S.D. value of 2.1% at the 5.0 μg ml⁻¹ levels. Protein contents in human serums were analyzed by using the present procedure, and reasonable agreements were obtained with those obtained by a documented spectrophotometric (Biuret) method.