Ultrafiltration as speciation tool for paraquat in humic acids suspensions: effects of solution composition on membrane properties
✍ Scribed by Luis E. Sojo
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 762 KB
- Volume
- 258
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
Ultrafiltration of paraquat aqueous solutions using YM2 Armcon membranes was mvestlgated as speaatlon tool m laboratory systems pertammg to freshwaters and sod solutions The effect of solution cornposItIon on the passage of paraquat through these membranes and then behavlour towards metal Ions such as copper, cahum and magnesmm was studled Ultrafiltration of nuxed solutions wntammg all four cations mcludmg paraquat showed no dlscemlble membranes effects m the concentration range of 1 X 10e6 to 1 x 10e4 molar The presence of high concentrations ( 001-O 1 M) of electrolytes such as NaCl and NaN03 m the ultrafiltration cell resulted m partial retention of paraquat by I'M2 membranes Keyworak Humlc acids, Paraquat, UltrafiltratIon