title: Improved sensitivity of glutamine synthetase assay and of acyl hydroxamates.
abstract: Sensitivity of glutamine synthetase assay by the hydroxamate method can be doubled by replacing ferric chloride with ferric nitrate of ferric perchlorate, each with the appropriate acid.
mesh_terms: D000042:Absorption; D005290:Ferric Compounds; D005974:Glutamate-Ammonia Ligase / Q000032:analysis*; D006877:Hydroxamic Acids / Q000032:analysis*; D007202:Indicators and Reagents; D009566:Nitrates; D010472:Perchlorates; D013053:Spectrophotometry
chemical_list: D005290:Ferric Compounds; D006877:Hydroxamic Acids; D007202:Indicators and Reagents; D009566:Nitrates; D010472:Perchlorates; C001473:iron perchlorate; D005974:Glutamate-Ammonia Ligase; C025302:ferric nitrate