{"tema_id":"254","string":"characteristic concentration, characteristic mass           #01197","created":"2022-12-19 09:13:29","code":null,"notes":[{"@type":"Scope note","@lang":"en-EN","@value":"Sensitivity has historically been used for this term. "},{"@type":"Cataloger's note","@lang":"en-EN","@value":"reference: R100:1991 3.5 "},{"@type":"Cataloger's note","@lang":"en-EN","@value":"ID: 01197 "},{"@type":"Definition note","@lang":"en-EN","@value":"the concentration\/mass of the element being determined needed to produce a signal of 0.0044 absorbance which is equivalent to a 1 % decrease in transmitted radiation "}]}