Abstract
AbstractFilter papers were tested for NH4 and NO3 contamination by eluting them with 2 M KCl solution and analyzing the leachate. Significant amounts of NH4 or NO3‐N were found in many filters. Variability between grades and kinds of filters, among lots within a grade, and within packages was high. For cellulose papers, quantitative grades were usually relatively high in NH4 and low in NO3. The reverse was true for qualitative grades. Glass fiber filters contained low but usually significant amounts of both ions. Most of the NH4‐ and NO3‐N was removed from cellulose filters by prewashing with water or 2 M KCl solution. Water successfully removed NO‐3 but not NH+4 from glass filters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
