{"query":{"parameter":"nitrite","place":"CA-AB","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-AB","CA"],"parameter_keys":["cas:14797-65-0","cas:71487-01-9","cas:109-95-5","cas:110-46-3","cas:542-56-3","name:nitrate and nitrite","cas:14797-55-8","name:nitrate-n + nitrite-n","name:nitrate + nitrite","name:nitrate + nitrite as n","name:nitrate/nitrite","name:nitrate/nitrite as n","name:nitrate plus nitrite","name:nitrate plus nitrite nitrogen","name:nitrite as n","cas:7632-00-0","name:nitrite - n","name:nitrite-n","name:nitrite + nitrate","name:nitrite+nitrate","name:nitrite plus nitrate","name:total nitrate and nitrite","name:total nitrate + nitrite","name:nitrates et nitrites","name:nitrates + nitrites","name:nitrates+nitrites"],"names_matched":[["nitrite","cas:14797-65-0"],["bis coconut oil alkyl dimethylammonium nitrite","cas:71487-01-9"],["ethyl nitrite","cas:109-95-5"],["isoamyl nitrite","cas:110-46-3"],["isobutyl nitrite","cas:542-56-3"],["nitrate and nitrite","name:nitrate and nitrite"],["nitrate and nitrite as n","name:nitrate and nitrite"],["nitrate as n criterion also applies to total nitrate nitrite","cas:14797-55-8"],["nitrate n nitrite n","name:nitrate-n + nitrite-n"],["nitrate nitrite","name:nitrate + nitrite"],["nitrate nitrite","name:nitrate + nitrite as n"],["nitrate nitrite","name:nitrate/nitrite"],["nitrate nitrite","name:nitrate/nitrite as n"],["nitrate nitrite as n","name:nitrate + nitrite"],["nitrate nitrite as n","name:nitrate + nitrite as n"],["nitrate nitrite as n","name:nitrate/nitrite"],["nitrate nitrite as n","name:nitrate/nitrite as n"],["nitrate plus nitrite","name:nitrate plus nitrite"],["nitrate plus nitrite as nitrogen n","name:nitrate plus nitrite"],["nitrate plus nitrite nitrogen","name:nitrate plus nitrite nitrogen"],["nitrite as n","name:nitrite as n"],["nitrite d ethyle","cas:109-95-5"],["nitrite d isoamyle","cas:110-46-3"],["nitrite de sodium","cas:7632-00-0"],["nitrite n","name:nitrite - n"],["nitrite n","name:nitrite-n"],["nitrite nitrate","name:nitrite + nitrate"],["nitrite nitrate","name:nitrite+nitrate"],["nitrite nitrate as n","name:nitrite + nitrate"],["nitrite nitrate as n","name:nitrite+nitrate"],["nitrite nitrate both as n","name:nitrite + nitrate"],["nitrite nitrate both as n","name:nitrite+nitrate"],["nitrite plus nitrate","name:nitrite plus nitrate"],["sodium nitrite","cas:7632-00-0"],["total nitrate and nitrite","name:total nitrate and nitrite"],["total nitrate and nitrite as nitrogen","name:total nitrate and nitrite"],["total nitrate nitrite","name:total nitrate + nitrite"],["dicoco alkyldimethyl ammonium nitrites","cas:71487-01-9","nitrites"],["nitrates et nitrites","name:nitrates et nitrites","nitrites"],["nitrates et nitrites n no2 et n no3","name:nitrates et nitrites","nitrites"],["nitrates nitrites","name:nitrates + nitrites","nitrites"],["nitrates nitrites","name:nitrates+nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates + nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates+nitrites","nitrites"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":4,"names":["Nitrate"],"says":"4 rows share a parameter key with a longer name holding \"nitrite\" but are printed under names without these words (that key is wider than the name): not sent. Ask for one by its name or CAS number."}},"total":3,"offset":0,"returned":3,"next_offset":null,"rows":[{"id":"747959a941ea3358","parameter":"Nitrite - N","value":"Varies","unit":"mg/L","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:nitrite - n","place":["CA-AB"],"conditions":["receiving_water is freshwater","a value given as an equation, a narrative or a table (Tables 1.1-1.7), carried as printed and never evaluated"],"cite":{"instrument":"ca_ab_eqg_surface_waters","title":"Environmental Quality Guidelines for Alberta Surface Waters (March 28, 2018) — Table 1, protection of freshwater aquatic life, long-term (chronic) and short-term (acute)","issuer":"Government of Alberta, Alberta Environment and Parks","edition":"March 28, 2018 (Alberta Environment and Parks)","source_url":"https://open.alberta.ca/dataset/5298aadb-f5cc-4160-8620-ad139bb985d8/resource/38ed9bb1-233f-4e28-b344-808670b20dae/download/environmentalqualitysurfacewaters-mar28-2018.pdf","source_sha256":"8d128a9d2efe359b62626cb0055d2ab7026328ef88a8afa3b5ed197c0b788d54","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Table 1 (freshwater aquatic life) · Nutrient; ions & general · BC 2001","page":34,"quote":null}},{"id":"eab9f13f3021ddb4","parameter":"Nitrite - N","value":"Varies","unit":"mg/L","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:nitrite - n","place":["CA-AB"],"conditions":["receiving_water is freshwater","a value given as an equation, a narrative or a table (Tables 1.1-1.7), carried as printed and never evaluated"],"cite":{"instrument":"ca_ab_eqg_surface_waters","title":"Environmental Quality Guidelines for Alberta Surface Waters (March 28, 2018) — Table 1, protection of freshwater aquatic life, long-term (chronic) and short-term (acute)","issuer":"Government of Alberta, Alberta Environment and Parks","edition":"March 28, 2018 (Alberta Environment and Parks)","source_url":"https://open.alberta.ca/dataset/5298aadb-f5cc-4160-8620-ad139bb985d8/resource/38ed9bb1-233f-4e28-b344-808670b20dae/download/environmentalqualitysurfacewaters-mar28-2018.pdf","source_sha256":"8d128a9d2efe359b62626cb0055d2ab7026328ef88a8afa3b5ed197c0b788d54","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Table 1 (freshwater aquatic life) · Nutrient; ions & general · BC 2001","page":34,"quote":null}},{"id":"b8567f0ba0da1cc9","parameter":"Nitrite","value":"60 NO2-N","value_num":60,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:14797-65-0","place":["CA"],"conditions":["receiving_water is freshwater","long-term exposure: CCME's long-term guideline"],"cite":{"instrument":"ca_ccme_wqg_aquatic","title":"CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary Table (as served 2026-09-24; each guideline carries its own year)","source_url":"https://ccme.ca/en/results/176,177,178,1,2,287,3,4,5,6,7,179,8,174,9,10,12,180,14,181,182,183,15,16,17,300,19,20,21,289,242,23,24,295,27,28,194,288,59,60,61,63,62,184,65,66,67,69,70,71,72,73,74,80,81,216,291,30,31,32,41,47,42,48,113,114,169,171,170,185,110,83,77,78,283,79,109,104,52,53,290,85,76,86,100,87,88,89,234,91,154,93,94,96,99,186,187,97,102,112,292,40,119,125,293,121,188,122,123,124,126,127,129,131,239,233,189,135,130,133,136,137,138,107,29,297,103,51,235,190,139,140,141,143,144,146,147,148,39,58,284,161,302,303,162,191,294,163,164,165,167,168,172,173,175,101,192,193,196,197,198,199,201,217,202,203,204,207,218,208,209,115,36,37,38,45,299,106,56,57,211,212,213,214,215,221,222,108,151,236,33,34,35,43,44,298,55,105,54,152,223,153,219,225,226,296,229/ch/1,2,3,4/csv","source_sha256":"f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"note":"douce_long_terme: printed basis: NO2-N","table":"eau_vie_aquatique","column":"douce_long_terme"}}],"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-AB"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"nitrite\", 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-AB"},"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"}]}