Selective ionisation detector - with heated softened glass alkali source for slow uniform release of ions

摘要

A selective ionisation detector for halogen, phosphorous and nitrogen compounds comprises a diode through which sample gas is passed, and an alkali source consisting of alkali glass maintained in a heated, softened state during operation. For analysis of pesticide residues in vegetable or animal substances, and medicinal or dry residues in blood, sweat or urine. Provides a long-lasting alkali source, releasing ions uniformly whereby detector sensitivity remains constant.