{"id":"S88003421","label":"Speciation (Chemistry)","description":"Here are entered works on the determination of the various physico-chemical forms or species of chemicals present in environmental samples and the description of their distribution and transformation, particularly those species which are biologically active.","source_url":"https://id.loc.gov/authorities/subjects/sh88003421","normalized_label":"speciation (chemistry)","broader":["http://id.loc.gov/authorities/subjects/sh85023011"],"aliases":["Biochemical speciation","Chemical speciation"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh88003421","provider":"lcsh","revision":"eb3e262444428e41","taxonomy_revision":"f050b5d4780b1289","title":"Speciation (Chemistry)","url":"/topics/S88003421","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5533877499093730820","address_version":"morton4x16-v1","coordinates":[0,20,64333,29696],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}