{"id":4632,"date":"2020-04-20T15:43:12","date_gmt":"2020-04-20T08:43:12","guid":{"rendered":"https:\/\/bacdau.vn\/?post_type=kb&p=4632"},"modified":"2020-04-20T16:25:47","modified_gmt":"2020-04-20T09:25:47","slug":"dac-diem-va-tinh-chat-cua-thach-tin","status":"publish","type":"kb","link":"https:\/\/bacdau.vn\/kb\/dac-diem-va-tinh-chat-cua-thach-tin\/","title":{"rendered":"\u0110\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a Th\u1ea1ch T\u00edn"},"content":{"rendered":"

\u0110\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a Th\u1ea1ch T\u00edn<\/h2>\n

Nh\u1eafc \u0111\u1ebfn Th\u1ea1ch T\u00edn<\/strong> l\u00e0 ng\u01b0\u1eddi ta s\u1ebd ngh\u0129 ngay \u0111\u1ebfn lo\u1ea1i ch\u1ea5t c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed9ng c\u1ef1c m\u1ea1nh, c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m \u0111\u1ebfn t\u00ednh m\u1ea1ng c\u1ee7a con ng\u01b0\u1eddi. V\u1eady th\u1ea1ch t\u00edn l\u00e0 g\u00ec?<\/strong> \u0111\u1eb7c t\u00ednh v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a th\u1ea1ch t\u00ednh nh\u01b0 th\u1ebf n\u00e0o? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi bacdau.vn<\/strong> \u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y nh\u00e9!<\/p>\n

\"\"<\/p>\n

Kh\u00e1i ni\u1ec7m c\u1ee7a th\u1ea1ch t\u00edn<\/h3>\n

Th\u1ea1ch t\u00edn l\u00e0 lo\u1ea1i ch\u1ea5t c\u1ef1c \u0111\u1ed9<\/em>, \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb c\u00e1c oxit c\u1ee7a asen, b\u1edfi \u0111\u00e2y l\u00e0 nguy\u00ean t\u1ed1 thu\u1ed9c nh\u00f3m ho\u00e1 h\u1ecdc kim lo\u1ea1i n\u1eb7ng, m\u00e0u c\u1ee7a n\u00f3 l\u00e0 m\u00e0u x\u00e1m c\u1ee7a th\u00e9p. Nh\u01b0ng khi \u1edf tr\u1ea1ng th\u00e1i oxit th\u00ec m\u00e0u c\u1ee7a n\u00f3 s\u1ebd l\u00e0 m\u00e0u v\u00e0ng thay v\u00ec m\u00e0u x\u00e1m nh\u01b0 b\u00ecnh th\u01b0\u1eddng.<\/p>\n

C\u00f4ng th\u1ee9c ho\u00e1 h\u1ecdc c\u1ee7a th\u1ea1ch t\u00edn l\u00e0 As2O3 v\u00e0 AsO2O5. \u0110\u00e2y l\u00e0 m\u1ed9t ch\u1ea5t tan d\u1ec5 d\u00e0ng trong n\u01b0\u1edbc. Kh\u00e1c v\u1edbi asen nguy\u00ean ch\u1ea5t v\u00e0 oxit c\u1ee7a n\u00f3, th\u1ea1ch t\u00edn l\u00e0 m\u1ed9t ch\u1ea5t kh\u00f4ng m\u00e0u, kh\u00f4ng m\u00f9i, d\u1ec5 tan trong n\u01b0\u1edbc v\u00e0 c\u00f3 th\u1ec3 l\u00e0m \u0111\u1ed5i m\u00e0u qu\u1ef3 t\u00edm.<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m t\u00ednh ch\u1ea5t c\u1ee7a th\u1ea1ch t\u00edn<\/h3>\n

Th\u1ea1ch t\u00edn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng c\u1ee7a v\u1ecf tr\u00e1i \u0111\u1ea5t, \u0111\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a l\u1edbp tr\u1ea7m t\u00edch trong v\u1ecf tr\u00e1i \u0111\u1ea5t. Ch\u00ednh v\u00ec v\u1eady, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y th\u1ea1ch t\u00edn \u1edf \u1edf trong c\u00e1c t\u1ea7ng n\u01b0\u1edbc ng\u1ea7m v\u00e0 b\u1ec1 m\u1eb7t n\u01b0\u1edbc c\u00f3 h\u00e0m l\u01b0\u1ee3ng th\u1ea5p.<\/p>\n

\u0110\u1eb7c bi\u1ec7t h\u01a1n, th\u1ea1ch t\u00edn c\u00f3 th\u1ec3 t\u1ed3n t\u00e0i \u1edf n\u01b0\u1edbc m\u00e0 n\u00f3 c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y \u1edf trong c\u1ea3 kh\u00f4ng kh\u00ed hay trong l\u00f2ng \u0111\u1ea5t v\u00e0 th\u1ef1c ph\u1ea9m. \u0110i\u1ec1u nguy hi\u1ec3m c\u1ee7a th\u1ea1ch t\u00edn l\u00e0 n\u00f3 r\u1ea5t d\u1ec5 th\u00e2m nh\u1eadp v\u00e0 c\u01a1 th\u1ec3 con ng\u01b0\u1eddi , v\u00e0 n\u00f3 \u0111i v\u00e0o c\u01a1 th\u1ec3 con ng\u01b0\u1eddi qua 3 \u0111\u01b0\u1eddng nh\u01b0 h\u00f4 h\u1ea5p, ti\u00eau ho\u00e1 v\u00e0 da.<\/p>\n

Nh\u01b0 ch\u00fang t\u00f4i \u0111\u00e3 gi\u1edbi thi\u1ec7u \u1edf tr\u00ean th\u00ec trong th\u1ea1ch t\u00edn c\u00f3 ch\u1ea5t asen h\u1eefu c\u01a1, l\u00e0 ch\u1ea5t c\u00f3 \u0111\u1ed9c t\u00ednh c\u1ef1c m\u1ea1nh, b\u1edfi v\u00ec \u0111\u00e2y l\u00e0 ch\u1ea5t ch\u1ec9 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf trong m\u00f4 th\u1ecbt \u1edf c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt, v\u00e0 c\u00f3 th\u1ec3 t\u00edch t\u1ee5 trong \u0111\u1ea5t v\u00e0 n\u01b0\u1edbc.<\/p>\n

Theo th\u1ed1ng k\u00ea c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc th\u00ec th\u1ea1ch t\u00edn \u0111\u1ed9c g\u1ea5p 4 l\u1ea7n thu\u1ef7 ng\u00e2n, l\u00e0 ch\u1ea5t \u0111\u01b0\u1ee3c c\u01a1 quan nghi\u00ean c\u1ee9u ung th\u01b0 qu\u1ed1c t\u1ebf v\u00e0 li\u00ean minh ch\u00e2u \u00e2u EU x\u00e1c nh\u1eadn l\u00e0 ch\u1ea5t c\u00f3 \u0111\u1ed9c t\u00ednh c\u1ef1c m\u1ea1nh, c\u00f3 th\u1ec3 g\u00e2y ung th\u01b0 v\u00e0 nguy hi\u1ec3m \u0111\u1ebfn t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi.<\/p>\n

\"\"<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u1ea1ch t\u00edn \u0111\u1ebfn s\u1ee9c kho\u1ebb con ng\u01b0\u1eddi<\/h3>\n

Nh\u01b0 \u1edf tr\u00ean bacdau.vn<\/strong> \u0111\u00e3 gi\u1edbi thi\u1ec7u th\u00ec th\u1ea1ch t\u00edn \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ra \u1edf trong l\u00f2ng \u0111\u1ea5t, n\u01b0\u1edbc v\u00e0 kh\u00f4ng kh\u00ed, cho n\u00ean h\u00e0ng ng\u00e0y ch\u00fang ta v\u1eabn th\u01b0\u1eddng h\u1ea5p th\u1ee5 th\u1ea1ch t\u00edn v\u00e0o c\u01a1 th\u1ec3 nh\u01b0ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u1ef1c \u00edt, cho n\u00ean n\u00f3 s\u1ebd kh\u00f4ng g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh m\u1ea1ng v\u00e0 s\u1ee9c kho\u1ebb c\u1ee7a con ng\u01b0\u1eddi. Tuy nhi\u00ean, th\u00ec \u1edf trong th\u1ea1ch t\u00edn cho asen, v\u00e0 \u0111\u00e2y l\u00e0 ch\u1ea5t g\u00e2y ung th\u01b0 nguy hi\u1ec3m nh\u1ea5t.<\/p>\n

M\u00e0 khi m\u00e0 c\u01a1 th\u1ec3 ch\u00fang ta \u0111\u00e3 h\u1ea5p th\u1ee5 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn th\u1ea1ch t\u00edn th\u00ec s\u1ebd g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n, v\u00e0 h\u1ec7 th\u1ea7n kinh c\u1ee7a c\u01a1 th\u1ec3. M\u1ed9t v\u00e0i bi\u1ec3u hi\u1ec7n khi c\u01a1 th\u1ec3 \u0111\u00e3 h\u1ea5p th\u1ee5 l\u01b0\u1ee3ng l\u1edbn th\u1ea1ch t\u00edn nh\u01b0: r\u1ee5ng t\u00f3c, bu\u1ed3n n\u00f4n hay b\u1ecb s\u00fat c\u00e2n nhanh ch\u00f3ng …<\/p>\n

Ngo\u00e0i nh\u1eefng t\u00e1c h\u1ea1i tr\u00ean th\u00ec th\u1ea1ch t\u00edn c\u0169ng c\u00f3 l\u1ee3i \u00edch nh\u01b0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ecb b\u1ec7nh hen suy\u1ec5n th\u00f4ng d\u1ee5ng, nh\u01b0ng d\u00f9 l\u00e0 c\u00f3 hi\u1ec7u qu\u1ea3 nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c nh\u01b0ng khi s\u1eed d\u1ee5ng, ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i l\u00e0m theo h\u01b0\u1edbng d\u1eabn c\u1ee7a b\u00e1c s\u0129 v\u00e0 l\u00e0m theo \u0111\u00fang c\u00e1ch .<\/p>\n

Hi v\u1ecdng v\u1edbi nh\u1eefng chia s\u1ebb tr\u00ean v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m, t\u00ednh ch\u1ea5t c\u1ee7a th\u1ea1ch t\u00edn<\/strong>. Hi v\u1ecdng b\u1ea1n s\u1ebd gi\u00fap b\u1ea1n b\u1ed5 sung th\u00eam \u0111\u01b0\u1ee3c \u00edt ki\u1ebfn th\u1ee9c v\u00e0 c\u00f3 nh\u1eefng th\u1eddi gian vui v\u1ebb b\u00ean BacDau.Vn<\/strong> nh\u00e9<\/p>\n","protected":false},"excerpt":{"rendered":"

Nh\u1eafc \u0111\u1ebfn Th\u1ea1ch T\u00edn l\u00e0 ng\u01b0\u1eddi ta s\u1ebd ngh\u0129 ngay \u0111\u1ebfn lo\u1ea1i ch\u1ea5t c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed9ng c\u1ef1c m\u1ea1nh, c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m \u0111\u1ebfn t\u00ednh m\u1ea1ng c\u1ee7a con ng\u01b0\u1eddi. V\u1eady th\u1ea1ch t\u00edn l\u00e0 g\u00ec? \u0111\u1eb7c t\u00ednh v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a th\u1ea1ch t\u00ednh nh\u01b0 th\u1ebf n\u00e0o? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi bacdau.vn \u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y nh\u00e9!<\/p>\n","protected":false},"author":1,"featured_media":4634,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"kbtopic":[764],"kbtag":[],"_links":{"self":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4632"}],"collection":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/comments?post=4632"}],"version-history":[{"count":0,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4632\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media\/4634"}],"wp:attachment":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media?parent=4632"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtopic?post=4632"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtag?post=4632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}