Abstract
Concentrations of Fe, Mn, Cu, Zn, Ca, Mg, K, and P were examined in untreated and ion exchange resin-treated solutions of polyethylene glycol, molecular weight 3000 to 3700, polyethylene glycol (PEG 4000). Relatively high levels of P were found in untreated PEF-4000 solutions. The concentration of contaminating P in solutions prepared from untreated PEG 4000, even at high water potentials (−1 to −3 bars), was greater than what is usually found in soil solution. Occurrence of significant amounts of P in untreated PEG could introduce problems in experiments where 32P and PEG are used together and where phosphate interactions may occur.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Greenway H., Hiller R. G., Flowers T. Respiratory inhibition in Chlorella produced by "purified" polyethylene glycol 1540. Science. 1968 Mar 1;159(3818):984–985. doi: 10.1126/science.159.3818.984. [DOI] [PubMed] [Google Scholar]
- LAGERWERFF J. V., OGATA G., EAGLE H. E. Control of osmotic pressure of culture solutions with polyethylene glycol. Science. 1961 May 12;133(3463):1486–1487. doi: 10.1126/science.133.3463.1486. [DOI] [PubMed] [Google Scholar]
- Mexal J., Fisher J. T., Osteryoung J., Reid C. P. Oxygen availability in polyethylene glycol solutions and its implications in plant-water relations. Plant Physiol. 1975 Jan;55(1):20–24. doi: 10.1104/pp.55.1.20. [DOI] [PMC free article] [PubMed] [Google Scholar]