{"id":4477,"date":"2026-03-16T10:24:39","date_gmt":"2026-03-16T02:24:39","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4477"},"modified":"2026-03-16T10:24:39","modified_gmt":"2026-03-16T02:24:39","slug":"determination-method-for-ammonia-nitrogen-in-surface-water-salicylate-spectrophotometric-method-2","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/th\/applications\/environment\/determination-method-for-ammonia-nitrogen-in-surface-water-salicylate-spectrophotometric-method-2","title":{"rendered":"\u0e27\u0e34\u0e18\u0e35\u0e01\u0e32\u0e23\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e41\u0e2d\u0e21\u0e42\u0e21\u0e40\u0e19\u0e35\u0e22\u0e44\u0e19\u0e42\u0e15\u0e23\u0e40\u0e08\u0e19\u0e43\u0e19\u0e19\u0e49\u0e33\u0e1c\u0e34\u0e27\u0e14\u0e34\u0e19 (\u0e27\u0e34\u0e18\u0e35 salicylate spectrophotometric)"},"content":{"rendered":"<p>1. \u0e2b\u0e25\u0e31\u0e01\u0e01\u0e32\u0e23\u0e27\u0e34\u0e18\u0e35<\/p>\n<p>\u0e43\u0e19\u0e15\u0e31\u0e27\u0e01\u0e25\u0e32\u0e07\u0e2d\u0e31\u0e25\u0e04\u0e32\u0e44\u0e25\u0e19\u0e4c (pH = 11.7) \u0e15\u0e48\u0e2d\u0e2b\u0e19\u0e49\u0e32\u0e42\u0e0b\u0e40\u0e14\u0e35\u0e22\u0e21 nitroferricyanide, \u0e41\u0e2d\u0e21\u0e42\u0e21\u0e40\u0e19\u0e35\u0e22\u0e41\u0e25\u0e30\u0e41\u0e2d\u0e21\u0e42\u0e21\u0e40\u0e19\u0e35\u0e22\u0e21\u0e44\u0e2d\u0e2d\u0e2d\u0e19\u0e43\u0e19\u0e19\u0e49\u0e33\u0e17\u0e33\u0e1b\u0e0f\u0e34\u0e01\u0e34\u0e23\u0e34\u0e22\u0e32\u0e01\u0e31\u0e1a salicylate \u0e41\u0e25\u0e30\u0e44\u0e2d\u0e2d\u0e2d\u0e19\u0e44\u0e2e\u0e42\u0e1b\u0e04\u0e25\u0e2d\u0e44\u0e23\u0e15\u0e4c\u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e2a\u0e23\u0e49\u0e32\u0e07\u0e2a\u0e32\u0e23\u0e1b\u0e23\u0e30\u0e01\u0e2d\u0e1a\u0e2a\u0e35\u0e19\u0e49\u0e33\u0e40\u0e07\u0e34\u0e19<\/p>\n<p>2. \u0e02\u0e2d\u0e1a\u0e40\u0e02\u0e15\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19<\/p>\n<p>\u0e04\u0e27\u0e32\u0e21\u0e15\u0e49\u0e2d\u0e07\u0e01\u0e32\u0e23\u0e02\u0e2d\u0e07\u0e27\u0e34\u0e18\u0e35\u0e01\u0e32\u0e23\u0e27\u0e34\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e2a\u0e4d\u0e32\u0e2b\u0e23\u0e31\u0e1a\u0e44\u0e19\u0e42\u0e15\u0e23\u0e40\u0e08\u0e19\u0e41\u0e2d\u0e21\u0e42\u0e21\u0e40\u0e19\u0e35\u0e22\u0e43\u0e19\u0e04\u0e38\u0e13\u0e20\u0e32\u0e1e\u0e19\u0e49\u0e33<\/p>\n<p>3. \u0e01\u0e32\u0e23\u0e2d\u0e49\u0e32\u0e07\u0e2d\u0e34\u0e07<\/p>\n<p>HJ 536-2009 \u0e04\u0e38\u0e13\u0e20\u0e32\u0e1e\u0e19\u0e49\u0e4d\u0e32  \u0e01\u0e32\u0e23\u0e01\u0e4d\u0e32\u0e2b\u0e19\u0e14\u0e44\u0e19\u0e42\u0e15\u0e23\u0e40\u0e08\u0e19\u0e41\u0e2d\u0e21\u0e42\u0e21\u0e40\u0e19\u0e35\u0e22<\/p>","protected":false},"excerpt":{"rendered":"<p>1. Method Principle In an alkaline medium (pH = 11.7) in the presence of sodium nitroferricyanide, ammonia and ammonium ions in water react with salicylate and hypochlorite ions to form a blue compound. The absorbance of this compound is measured at 697 nm to quantify the ammonia nitrogen content. 2. Scope of Application Requirements of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[75],"tags":[],"class_list":["post-4477","post","type-post","status-publish","format-standard","hentry","category-environment"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/posts\/4477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/comments?post=4477"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/posts\/4477\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/media?parent=4477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/categories?post=4477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/th\/wp-json\/wp\/v2\/tags?post=4477"}],"curies":[{"name":"\u0e27\u0e35\u0e1e\u0e35","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}