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{"id":801,"date":"2016-09-27T07:21:07","date_gmt":"2016-09-27T07:21:07","guid":{"rendered":"http:\/\/vuhoangco.com.vn\/en\/?post_type=product&p=801"},"modified":"2016-09-28T09:02:03","modified_gmt":"2016-09-28T09:02:03","slug":"edta-ethylenediaminetetraacetic-acid-c10h16n2o8","status":"publish","type":"product","link":"http:\/\/vuhoangco.com.vn\/en\/product\/edta-ethylenediaminetetraacetic-acid-c10h16n2o8\/","title":{"rendered":"EDTA – C10H16N2O8"},"content":{"rendered":"

T\u00ednh ch\u1ea5t v\u1eadt l\u00fd:\u00a0<\/strong><\/em>da\u0323ng b\u00f4\u0323t ma\u0300u tr\u0103\u0301ng<\/p>\n

T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc:\u00a0<\/em><\/strong><\/p>\n

\u0110\u1eb7c t\u00ednh c\u1ee7a EDTA <\/b>l\u00e0 t\u1ea1o ph\u1ee9c v\u1edbi c\u00e1c kim lo\u1ea1i \u1edf t\u1ec9 l\u1ec7 1:1. Kh\u1ea3 n\u0103ng t\u1ea1o ph\u1ee9c v\u1edbi kim lo\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o pH c\u1ee7a n\u01b0\u1edbc, ch\u1eb3ng h\u1ea1n nh\u01b0 Ca2+<\/sup>\u00a0v\u00e0 Mg2+<\/sup>\u00a0y\u00eau c\u1ea7u pH kho\u1ea3ng 10 (Sinax, 2011). M\u1eb7t kh\u00e1c, s\u1ef1 t\u1ea1o ph\u1ee9c v\u1edbi c\u00e1c kim lo\u1ea1i c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o h\u1eb1ng s\u1ed1 h\u00ecnh th\u00e0nh ph\u1ee9c, h\u1eb1ng s\u1ed1 c\u00e0ng cao th\u00ec kh\u1ea3 n\u0103ng t\u1ea1o ph\u1ee9c c\u00e0ng cao. \u0110\u1ed1i v\u1edbi ch\u00ec (Pb) h\u1eb1ng s\u1ed1 K=1018<\/sup>, nh\u01b0ng \u0111\u1ed1i v\u1edbi Ca2+<\/sup>, K~108<\/sup>. Do \u0111\u00f3, theo Sinax (2011) trong m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc, m\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u Ca2+<\/sup>, nh\u01b0ng Pb2+<\/sup>\u00a0s\u1ebd c\u1ea1nh tranh v\u1edbi Ca2+<\/sup>.<\/p>\n

EDTA di chuy\u1ec3n v\u00e0o trong \u0111\u1ea5t v\u00e0 t\u1ea1o ph\u1ee9c v\u1edbi c\u00e1c kim lo\u1ea1i v\u1ebft c\u0169ng nh\u01b0 l\u00e0 c\u00e1c kim lo\u1ea1i ki\u1ec1m th\u1ed5 (Na+<\/sup>, K+<\/sup>, Ca2+<\/sup>,\u2026), t\u1eeb \u0111\u00f3 l\u00e0m t\u0103ng \u0111\u1ed9 h\u00f2a tan c\u1ee7a kim lo\u1ea1i. \u0110\u1eb7c bi\u1ec7t l\u00e0 trong \u0111\u1ea5t ph\u00e8n, EDTA<\/b> s\u1ebd t\u1ea1o ph\u1ee9c k\u1eb9p (chelate) Fe-EDTA<\/b> t\u1eeb \u0111\u00f3 l\u00e0m gi\u1ea3m qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Fe3+<\/sup>. Trong m\u00f4i tr\u01b0\u1eddng ki\u1ec1m, EDTA l\u1ea1i t\u1ea1o ph\u1ee9c ch\u1ee7 y\u1ebfu v\u1edbi Ca2+<\/sup>\u00a0v\u00e0 Mg2+<\/sup>\u00a0t\u1ea1o th\u00e0nh CaMg-EDTA<\/b> (EPA, 2004) l\u00e0m gi\u1ea3m \u0111\u1ed9 c\u1ee9ng c\u1ee7a n\u01b0\u1edbc. M\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c l\u00e0 trong ph\u00e2n t\u1eedEDTA<\/b> c\u00f3 10% l\u00e0 nit\u01a1, v\u00ec v\u1eady khi s\u1eed d\u1ee5ng EDTA<\/b> c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n cung c\u1ea5p th\u00eam nit\u01a1 cho m\u00f4i tr\u01b0\u1eddng k\u00edch th\u00edch t\u1ea3o ph\u00e1t tri\u1ec3n. M\u1eb7t kh\u00e1c, theo Sillanpaa (1997) trong n\u01b0\u1edbc Ca3<\/sub>(PO4<\/sub>)2<\/sub>\u00a0v\u00e0 FePO4<\/sub>\u00a0th\u01b0\u1eddng l\u00e0 nh\u1eefng d\u1ea1ng kh\u00f4ng h\u00f2a tan l\u00e0m m\u1ea5t \u0111i l\u01b0\u1ee3ng l\u1edbn PO4<\/sub>3-<\/sup>\u00a0trong n\u01b0\u1edbc l\u00e0m h\u1ea1n ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a t\u1ea3o, t\u1eeb \u0111\u00f3 l\u00e0m m\u00f4i tr\u01b0\u1eddng kh\u00f3 g\u00e2y m\u00e0u n\u01b0\u1edbc. Khi s\u1eed d\u1ee5ng EDTA<\/b> s\u1ebd t\u1ea1o ph\u1ee9c v\u1edbi Ca, Fe t\u1eeb \u0111\u00f3 ph\u00f3ng th\u00edch PO4<\/sub>3-<\/sup>\u00a0v\u00e0o trong n\u01b0\u1edbc \u1edf d\u1ea1ng h\u00f2a tan, t\u1eeb \u0111\u00f3 k\u00edch th\u00edch t\u1ea3o ph\u00e1t tri\u1ec3n<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc : C10H16N2O8<\/strong><\/p>\n

T\u00ean h\u00f3a h\u1ecdc : Ethylendiamin Tetraacetic Acid –\u00a0Ethylendiamin Tetraacetic Acid<\/strong><\/p>\n

Xu\u1ea5t x\u1ee9: Nh\u1eadt B\u1ea3n – H\u00e0n Qu\u1ed1c<\/b><\/p>\n

Qui c\u00e1ch :\u00a025kg\/ bao<\/strong><\/p>\n","protected":false},"featured_media":802,"comment_status":"open","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/product\/801"}],"collection":[{"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/comments?post=801"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/media\/802"}],"wp:attachment":[{"href":"http:\/\/vuhoangco.com.vn\/en\/wp-json\/wp\/v2\/media?parent=801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}