𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Flow injection analysis with amperometric detection of cocaine in confiscated samples

✍ Scribed by M.Teresa Fernández-Abedul; A Costa-García

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
441 KB
Volume
328
Category
Article
ISSN
0003-2670

No coin nor oath required. For personal study only.

✦ Synopsis

Flow injection analysis (FIA) with amperometric detection is applied to the determination of cocaine. Flow parameters were optimised prior to electrode calibration: a detection potential of +l V vs. Ag/AgCYsat. KC1 and a flow rate of 2.5 ml min-' resulted adequate. A relative standard deviation of 1.7% was calculated for a concentration level of 6.2x lo@ (n=12) without carrying out a carbon paste electrode pretreatment. Calibration curves were found to be linear between 2x lo-' and 10P5 M, and the method has a detection limit of 2 x lo-' M. A simple and reproducible procedure is proposed for the determination of cocaine in illegal dosage forms confiscated by police authorities. The method compared favourably with liquid chromatography with UV detection.

📜 SIMILAR VOLUMES

Determination of Traces of Uranium in En
Determination of Traces of Uranium in Environmental Samples Using a Flow Injection System with Amperometric Catalytic Detection
✍ Marco A. S. Aguiar; Karem S. G. Marquez; Ivano G. R. Gutz 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 267 KB 👁 2 views

A new method for ¯ow injection analysis (FIA) of traces of uranium by catalytic amperometric detection in nitrate medium is described. Interfering oxygen was removed by in-line degassing. A simple adapter was designed to afford FIA with batch cells comprising a hanging mercury drop electrode. The ca

Detection of bacterial ATP by reversed f
Detection of bacterial ATP by reversed flow-injection analysis with luminescence detection
✍ J.N. Miller; M.B. Nawawi; C. Burgess 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 399 KB

Plow-m~ect~on analysis wth lummometnc detetion was used to detect trace wncentratlons of ATP released from bactena Luctierm and luclferase reagents were mected mto a flowmg stream of aqueous ATP or of bactenal extract A hqmd scmtdlatlon counter was used as the detector Expenmental vanables were stur