𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Turbidimetric determination of sulphate in waters employing flow injection and lead sulphate formation

✍ Scribed by Ricardo Erthal Santelli; Paulo Roberto Salgado Lopes; Regina Célia Leme Santelli; Angela De Luca Rebello Wagener

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
394 KB
Volume
300
Category
Article
ISSN
0003-2670

No coin nor oath required. For personal study only.

✦ Synopsis

An analytical flow-injection procedure based on PbS04 colloidal formation is proposed as a turbidimetric determination of sulphate in natural waters. Ethanol-water was used as a medium in order to improve the sensibility of the method. Both chemical and flow variables as well as interfering species were studied. A detection limit of 0.3 pg SOi-ml-' was found, and the analytical range (according to Beer's law) was 2-20 pg SO:-ml-'. The precision was better than 3% R.S.D. and the sample throughput was ca. 35 h-'. The method, when compared with a standard methodology, gave good results when applied to water analysis.

📜 SIMILAR VOLUMES

Flow-injection spectrofluorimetric deter
Flow-injection spectrofluorimetric determination of sulphate using calcein and zirconium
✍ N. Chimpalee; D. Chimpalee; S. Suparuknari; B. Boonyanitchayakul; D.Thorburn Bur 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 386 KB

Sulphate can be determined spectrofluorimetrically (A,, = 505 nm, A,, = 410 nm) based on the formation of a ternary complex between sulphate, zirconium and calcein in a flow-injection system. The carrier stream was deionised water and the reagent streams were 100 pg ml \_ ' Zr (as ZrOCl,) in 1% (v/v