English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A very simple, rapid, highly selective and ultrasensitive fluorimetric method for the determination of Cobalt (II) has been developed. The method is based on the instantaneous quenching action of Cobalt(II) on the native fluorescence of Bathophenanthrolinedisulphonate (4,7-diphenyl-1,10-phenanthroline disulphonate) having excitation and emission wavelength maxima at 288nm and 444.8nm respectively in the optimum pH range of 4.0-4.7.The fluorescence intensity versus Cobalt (II) concentration calibration graph was rectilinear for a total range of 0.001-1.0ppm Cobalt (II).The standard deviation and relative standard deviation for 11 replicate determinations of 50ppb Cobalt (II) were found to be 0.435 and 0.868% respectively. Keywords: Bathophenanthrolinedisulphonate, Cobalt (II), Environmental samples, Quenchofluorimetry, Toxicity.

Quenchofluorimetric Determination of Cobalt (II) At Ultra trace Levels Using Bathophenanthrolinedisulphonate