{"query":{"parameter":"perylene","place":"CA-ON","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-ON","CA"],"parameter_keys":["cas:198-55-0","cas:191-24-2","name:polycyclic aromatic hydrocarbons, total of ten (acenaphthylene, benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(ghi)perylene, benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, indeno(1,2,3-cd)pyrene, phenanthrene)"],"names_matched":[["perylene","cas:198-55-0"],["benzo g h i perylene","cas:191-24-2"],["benzo g h i perylene pah","cas:191-24-2"],["benzo ghi perylene","cas:191-24-2"],["polycyclic aromatic hydrocarbons total of ten acenaphthylene benzo a anthracene benzo a pyrene benzo b fluoranthene benzo ghi perylene benzo k fluoranthene chrysene dibenzo a h anthracene indeno 1 2 3 cd pyrene phenanthrene","name:polycyclic aromatic hydrocarbons, total of ten (acenaphthylene, benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(ghi)perylene, benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, indeno(1,2,3-cd)pyrene, phenanthrene)"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":57,"names":["Benzo[ghi]perylene","Benzo[g,h,i]perylene"],"says":"57 rows share a parameter key with a longer name holding \"perylene\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"perylene\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"b5c11318d0850554","parameter":"Perylene","value":"0.00007 µg/L","value_num":0.00007,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:198-55-0","place":["CA-ON"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"ca_on_pwqo","title":"Provincial Water Quality Objectives (Ontario MOEE, Water Management: Policies, Guidelines, Provincial Water Quality Objectives, 1994) — Table 2, PWQOs and Interim PWQOs","issuer":"Ontario Ministry of Environment and Energy (MOEE; now Ministry of the Environment, Conservation and Parks)","edition":"MOEE July 1994 (reprinted February 1999), as published on ontario.ca (fetched 2026-10-09)","source_url":"https://www.ontario.ca/page/water-management-policies-guidelines-provincial-water-quality-objectives","source_sha256":"f4eddd3cd97cf5abb8678d040947bdaa2b4afae406f055948457d372d3b47931","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Appendix A, Table 2 — Table of PWQOs and Interim PWQOs","page":null,"quote":"Perylene CAS No. 198-55-0 0.00007 µg/L (Interim PWQO )"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"CA-ON"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"perylene\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"CA-ON"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}