M\u1ed9t nh\u00e0 khoa h\u1ecdc m\u00f4i tr\u01b0\u1eddng Cana\u0111a khi nghi\u00ean c\u1ee9u l\u1ecbch s\u1eed c\u00e1c Ho\u00e0ng \u0111\u1ebf c\u1ed5 La M\u00e3 \u0111\u00e3 \u0111\u01b0a ra nh\u1eadn x\u00e9t: Ho\u00e0ng \u0111\u1ebf La M\u00e3 v\u00e0 r\u1ea5t nhi\u1ec1u nh\u00e0 qu\u00ed t\u1ed9c th\u1eddi \u0111\u00f3 \u0111\u00e3 ch\u1ebft v\u00ec ng\u1ed9 \u0111\u1ed9c ch\u00ec m\u00e3n t\u00ednh. Nguy\u00ean nh\u00e2n l\u00e0 r\u1ea5t nhi\u1ec1u th\u1ef1c ph\u1ea9m c\u1ee7a h\u1ecd \u0111\u00e3 b\u1ecb \u00f4 nhi\u1ec5m ch\u00ec v\u00e0 nh\u1eefng th\u1ee9c u\u1ed1ng nh\u01b0 r\u01b0\u1ee3u nho \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111\u1ef1ng trong nh\u1eefng b\u00ecnh b\u1eb1ng ch\u00ec. V\u00ec v\u1eady s\u1ef1 t\u1eed vong c\u1ee7a c\u00e1c \u0111\u1ebf qu\u1ed1c La M\u00e3 h\u00f9ng m\u1ea1nh c\u00f3 li\u00ean quan r\u1ea5t nhi\u1ec1u \u0111\u1ebfn \u00f4 nhi\u1ec5m ch\u00ec. \u00fd ki\u1ebfn n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 s\u1eed h\u1ecdc th\u1eeba nh\u1eadn, song h\u00e0ng ngh\u00ecn n\u0103m nay \u00f4 nhi\u1ec5m ch\u00ec v\u1eabn ch\u01b0a g\u00e2y \u0111\u01b0\u1ee3c s\u1ef1 c\u1ea3nh gi\u00e1c \u0111\u1ed1i v\u1edbi nh\u00e2n lo\u1ea1i. M\u00e3i \u0111\u1ebfn nh\u1eefng n\u0103m 60 c\u1ee7a th\u1ebf k\u1ec9 XX, khi<\/p>\n\n\n\n
Tokyo, Nh\u1eadt B\u1ea3n ph\u00e1t sinh s\u1ef1 ki\u1ec7n d\u00e2n c\u01b0 ng\u1ed9 \u0111\u1ed9c ch\u00ec m\u00e3n t\u00ednh do kh\u00ed th\u1ea3i \u00f4 t\u00f4 g\u00e2y n\u00ean th\u00ec \u00f4 nhi\u1ec5m ch\u00ec m\u1edbi \u0111\u01b0\u1ee3c c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi ph\u1ed5 bi\u1ebfn coi tr\u1ecdng.<\/p>\n\n\n\n
Vi l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 ch\u00ec \u0111\u1ed1i v\u1edbi c\u01a1 th\u1ec3 ng\u01b0\u1eddi c\u00f3 th\u1ec3 n\u00f3i kh\u00f4ng \u0111\u00e1ng k\u1ec3. Trong c\u00f4ng nghi\u1ec7p, ch\u00ec \u0111\u01b0\u1ee3c d\u00f9ng r\u1ea5t r\u1ed9ng r\u00e3i. Ch\u00ec m\u00e0 ta th\u01b0\u1eddng n\u00f3i \u0111\u1ebfn c\u00f3 th\u1ec3 chia th\u00e0nh kim lo\u1ea1i ch\u00ec v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t c\u1ee7a ch\u00ec. Th\u00e0nh ph\u1ea7n ch\u00ec trong m\u00f4i tr\u01b0\u1eddng ch\u1ee7 y\u1ebfu l\u00e0 \u1edf d\u1ea1ng h\u1ee3p ch\u1ea5t. V\u00ed d\u1ee5 ch\u00ec tr\u1eafng (mu\u1ed1i cacbonat ch\u00ec \u1edf d\u1ea1ng ki\u1ec1m) d\u00f9ng \u0111\u1ec3 l\u00e0m ch\u1ea5t t\u1ea1o m\u00e0u khi s\u01a1n l\u00ean c\u00e1c \u0111\u1ed3 g\u1ed7 v\u00e0 d\u00f9ng l\u00e0m ch\u1ea5t \u1ed5n \u0111\u1ecbnh trong \u0111\u1ed3 nh\u1ef1a; ch\u00ec \u0111\u1ecf (tetroxit ch\u00ec) d\u00f9ng l\u00e0m s\u01a1n; tetraethyl ch\u00ec d\u00f9ng l\u00e0m ch\u1ea5t ch\u1ed1ng n\u1ed5 c\u1ee7a x\u0103ng. Trong n\u00f4ng nghi\u1ec7p asenat ch\u00ec d\u00f9ng l\u00e0m thu\u1ed1c s\u00e1t tr\u00f9ng.<\/p>\n\n\n\n
\u00d4 nhi\u1ec5m ch\u00ec \u1edf th\u00e0nh th\u1ecb ch\u1ee7 y\u1ebfu l\u00e0 do kh\u00ed ph\u1ebf th\u1ea3i \u00f4 t\u00f4 g\u00e2y ra. \u00d4 t\u00f4 ph\u1ea7n l\u1edbn s\u1eed d\u1ee5ng lo\u1ea1i x\u0103ng ch\u1ee9a tetraethyl ch\u00ec. Khi x\u0103ng ch\u00e1y, m\u1ed9t ph\u1ea7n tetraethyl ch\u00ec b\u1ecb ph\u00e2n gi\u1ea3i th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t c\u1ee7a mu\u1ed1i ch\u00ec v\u00f4 c\u01a1 v\u00e0 h\u1ee3p ch\u1ea5t oxit Ch\u00fang v\u00e0 ph\u1ea7n tetraethyl ch\u00ec c\u00f2n l\u1ea1i \u1edf d\u1ea1ng h\u1ea1t s\u01b0\u01a1ng m\u00f9 li ti l\u1eabn trong kh\u00ed th\u1ea3i c\u1ee7a \u00f4 t\u00f4 g\u00e2y n\u00ean \u00f4 nhi\u1ec5m kh\u00f4ng kh\u00ed. Ngo\u00e0i ra, trong n\u01b0\u1edbc thi\u00ean nhi\u00ean, \u0111\u1ea5t v\u00e0 th\u1ef1c ph\u1ea9m c\u0169ng c\u00f3 ch\u00ec. Th\u1ef1c ph\u1ea9m \u00f4 nhi\u1ec5m ch\u00ec th\u01b0\u1eddng l\u00e0 do nh\u1eefng b\u00ecnh \u0111\u1ef1ng c\u00f3 th\u00e0nh ph\u1ea7n ch\u00ec cao g\u00e2y n\u00ean.<\/p>\n\n\n\n
Ch\u00ec trong m\u00f4i tr\u01b0\u1eddng ch\u1ee7 y\u1ebfu th\u00f4ng qua \u0111\u01b0\u1eddng h\u00f4 h\u1ea5p v\u00e0 ti\u00eau h\u00f3a \u0111\u1ec3 \u0111i v\u00e0o c\u01a1 th\u1ec3. Tu\u1ed5i c\u00e0ng cao th\u00ec l\u01b0\u1ee3ng ch\u00ec t\u00edch t\u1ee5 trong c\u01a1 th\u1ec3 c\u00e0ng t\u0103ng l\u00ean. M\u1ed9t ng\u01b0\u1eddi n\u1eb7ng 70 kg trong c\u01a1 th\u1ec3 ch\u1ee9a kho\u1ea3ng 200 mg ch\u00ec, 90% \u1edf trong x\u01b0\u01a1ng, c\u00e1c c\u01a1 quan ph\u1ee7 t\u1ea1ng kh\u00e1c c\u0169ng ch\u1ee9a m\u1ed9t vi l\u01b0\u1ee3ng ch\u00ec. Ch\u00ec th\u00e2m nh\u1eadp v\u00e0o m\u00e1u s\u1ebd h\u00ecnh th\u00e0nh diphophat ch\u00ec d\u1ec5 h\u00f2a tan \u0111\u01b0a \u0111\u1ebfn gan, th\u1eadn, t\u00ec, ph\u1ed5i v\u00e0 n\u00e3o. Ch\u00ec \u1edf trong m\u00e1u c\u00f3 th\u1ec3 l\u00e0m nhi\u1ec5u lo\u1ea1n ch\u1ee9c n\u0103ng v\u1eadn chuy\u1ec3n oxi c\u1ee7a m\u00e1u, g\u00e2y t\u1ed5n h\u1ea1i cho thai nhi trong th\u1eddi k\u00ec ph\u00e1t tri\u1ec3n. Ch\u00ec x\u00e2m nh\u1eadp v\u00e0o t\u1ebf b\u00e0o n\u00e3o s\u1ebd \u1edf l\u1ea1i \u0111\u00f3 l\u00e2u d\u00e0i, g\u1eafn ch\u1eb7t v\u1edbi nh\u1eefng b\u1ed9 ph\u1eadn quan tr\u1ecdng c\u1ee7a t\u1ebf b\u00e0o n\u00e3o, l\u00e0m nhi\u1ec5u lo\u1ea1n s\u1ef1 truy\u1ec1n d\u1eabn c\u00e1c t\u00edn hi\u1ec7u c\u1ee7a t\u1ebf b\u00e0o n\u00e3o. Tr\u1ebb em trong giai \u0111o\u1ea1n \u0111\u1ea1i n\u00e3o \u0111ang ph\u00e1t tri\u1ec3n th\u00ec \u00f4 nhi\u1ec5m ch\u00ec s\u1ebd c\u00e0ng nguy h\u1ea1i h\u01a1n. Ng\u1ed9 \u0111\u1ed9c ch\u00ec c\u00f3 th\u1ec3 khi\u1ebfn cho tr\u00ed th\u00f4ng minh c\u1ee7a tr\u1ebb em gi\u1ea3m \u0111i r\u1ea5t nhi\u1ec1u, khi\u1ebfn cho \u0111\u1ea1i n\u00e3o t\u00ea d\u1ea1i, tinh th\u1ea7n u\u1ec3 o\u1ea3i. \u00d4 nhi\u1ec5m ch\u00ec nghi\u00eam tr\u1ecdng c\u00f2n d\u1eabn \u0111\u1ebfn tr\u1ebb em t\u1eed vong.<\/p>\n\n\n\n
Ng\u00e0y nay, h\u00e0m l\u01b0\u1ee3ng ch\u00ec trong kh\u00f4ng kh\u00ed \u0111\u00e3 t\u0103ng l\u00ean h\u00e0ng v\u1ea1n l\u1ea7n so v\u1edbi th\u1eddi k\u00ec nguy\u00ean th\u1ee7y. L\u01b0\u1ee3ng ch\u00ec ch\u00fang ta h\u1ea5p thu v\u00e0o c\u01a1 th\u1ec3 \u0111\u00e3 t\u0103ng l\u00ean h\u00e0ng ngh\u00ecn l\u1ea7n so v\u1edbi l\u01b0\u1ee3ng ch\u00ec ng\u01b0\u1eddi nguy\u00ean th\u1ee7y h\u1ea5p thu ph\u1ea3i, do \u0111\u00f3 \u0111\u00e3 g\u1ea7n \u0111\u1ebfn gi\u1edbi h\u1ea1n n\u1ed3ng \u0111\u1ed9 c\u01a1 th\u1ec3 cho ph\u00e9p. V\u00ec v\u1eady ch\u00fang ta quy\u1ebft kh\u00f4ng th\u1ec3 xem th\u01b0\u1eddng \u00f4 nhi\u1ec5m ch\u00ec.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Ch\u00ec; \u00d4 nhi\u1ec5m ch\u00ec.<\/p>\n","protected":false},"excerpt":{"rendered":"
M\u1ed9t nh\u00e0 khoa h\u1ecdc m\u00f4i tr\u01b0\u1eddng Cana\u0111a khi nghi\u00ean c\u1ee9u l\u1ecbch s\u1eed c\u00e1c Ho\u00e0ng \u0111\u1ebf c\u1ed5 La M\u00e3 \u0111\u00e3 \u0111\u01b0a ra nh\u1eadn x\u00e9t: Ho\u00e0ng \u0111\u1ebf La M\u00e3 v\u00e0 r\u1ea5t nhi\u1ec1u nh\u00e0 qu\u00ed t\u1ed9c th\u1eddi \u0111\u00f3 \u0111\u00e3 ch\u1ebft v\u00ec ng\u1ed9 \u0111\u1ed9c ch\u00ec m\u00e3n t\u00ednh. Nguy\u00ean nh\u00e2n l\u00e0 r\u1ea5t nhi\u1ec1u th\u1ef1c ph\u1ea9m c\u1ee7a h\u1ecd \u0111\u00e3 b\u1ecb \u00f4 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,17],"tags":[],"class_list":["post-9545","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-moi-truong"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9545"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9545\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}