H\u1eb1ng n\u0103m khi \u0111\u1ebfn t\u1ebft, nhi\u1ec1u ng\u01b0\u1eddi r\u1ea5t th\u00edch \u0111\u1ed1t ph\u00e1o, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u1ebb em. \u0110\u1ed1t ph\u00e1o n\u1ed5 ho\u1eb7c \u0111\u1ed1t ph\u00e1o b\u00f4ng, ph\u00e1o hoa, m\u00e0u s\u1eafc mu\u00f4n v\u1ebb th\u1eadt l\u00e0 n\u00e1o nhi\u1ec7t! \u0110\u1ed1t ph\u00e1o b\u00f4ng, ph\u00e1o hoa \u0111\u1ec3 ch\u00fac m\u1eebng n\u0103m m\u1edbi \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t t\u1eadp t\u1ee5c k\u00e9o d\u00e0i nhi\u1ec1u n\u0103m \u1edf Trung Qu\u1ed1c. T\u1eadp t\u1ee5c n\u00e0y tuy l\u00e0m t\u0103ng th\u00eam kh\u00f4ng kh\u00ed vui v\u1ebb c\u1ee7a ng\u00e0y t\u1ebft nh\u01b0ng c\u0169ng g\u00e2y ra kh\u00f4ng \u00edt t\u00e1c h\u1ea1i.<\/p>\n\n\n\n
Nguy\u00ean li\u1ec7u \u0111\u1ec3 l\u00e0m ph\u00e1o l\u00e0 thu\u1ed1c ph\u00e1o, th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu g\u1ed3m c\u00f3: l\u01b0u hu\u1ef3nh, b\u1ed9t than, di\u00eam ti\u00eau (nitrat kali ho\u1eb7c clorat kali). Trong thu\u1ed1c ph\u00e1o ng\u01b0\u1eddi ta pha l\u1eabn c\u00e1c b\u1ed9t kim lo\u1ea1i nh\u01b0 magie, nh\u00f4m, \u0103ngtimon v\u00e0 nitrat stronti theo m\u1ed9t t\u1ec9 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 t\u1ea1o m\u00e0u. Khi \u0111\u1ed1t ph\u00e1o c\u00e1c kim lo\u1ea1i ho\u1eb7c c\u00e1c ph\u00e2n t\u1eed kim lo\u1ea1i kh\u00e1c nhau s\u1ebd ch\u00e1y l\u00ean th\u00e0nh nh\u1eefng m\u00e0u s\u1eafc kh\u00e1c nhau. Sau khi \u0111\u1ed1t ph\u00e1o \u0111\u00f9ng ho\u1eb7c ph\u00e1o b\u00f4ng, ph\u00e1o hoa, ch\u00fang v\u1eeba b\u1ed1c ch\u00e1y, n\u1ed5 r\u1ea5t nhanh v\u00e0 phun ra kh\u00f3i l\u1eeda \u0111\u1ee7 m\u00e0u s\u1eafc, \u0111\u1ed3ng th\u1eddi s\u1ea3n sinh ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn oxit nit\u01a1, oxit sunfur\u01a1, kh\u00ed cacbonic, kh\u00ed CO v\u00e0 nhi\u1ec1u kh\u00ed c\u00f3 h\u1ea1i kh\u00e1c c\u00f9ng v\u1edbi b\u1ee5i c\u1ee7a c\u00e1c h\u1ee3p ch\u1ea5t kim lo\u1ea1i g\u00e2y n\u00ean \u00f4 nhi\u1ec5m. Trong \u0111\u00f3 kh\u00ed oxit nit\u01a1 v\u00e0 kh\u00ed sunfur\u01a1 c\u00f3 t\u00ednh k\u00edch th\u00edch v\u00e0 t\u00ednh g\u00e2y hoen g\u1ec9 r\u1ea5t m\u1ea1nh, ch\u00fang s\u1ebd k\u00edch th\u00edch \u0111\u01b0\u1eddng h\u00f4 h\u1ea5p g\u00e2y ho v\u00e0 vi\u00eam ph\u1ebf qu\u1ea3n.<\/p>\n\n\n\n
Khi \u0111\u1ed1t ph\u00e1o n\u1ed5 ho\u1eb7c ph\u00e1o b\u00f4ng, ph\u00e1o hoa, ti\u1ebfng n\u1ed5 m\u1ea1nh m\u1ebd c\u1ee7a ch\u00fang c\u00f2n l\u00e0 ti\u1ebfng \u1ed3n g\u00e2y ch\u1ea5n \u0111\u1ed9ng trong th\u00e0nh ph\u1ed1, \u0111\u1eb7c bi\u1ec7t \u0111\u00eam giao th\u1eeba kh\u1eafp c\u00e1c ng\u00f5 ph\u1ed1, ti\u00e9ng ph\u00e1o \u1ea7m vang l\u00e0m \u0111inh tai nh\u1ee9c \u00f3c, c\u1ea3 th\u00e0nh ph\u1ed1 ch\u00ecm trong kh\u00f3i m\u00f9 gi\u1ed1ng nh\u01b0 b\u00e3i chi\u1ebfn tr\u01b0\u1eddng. L\u00fac \u0111\u00f3, tr\u1ebb em, ng\u01b0\u1eddi gi\u00e0 v\u00e0 nh\u1eefng b\u1ec7nh nh\u00e2n tim r\u1ea5t d\u1ec5 b\u1ecb kinh gi\u1eadt, nh\u1eefng ng\u01b0\u1eddi kh\u00e1c c\u0169ng kh\u00f4ng th\u1ec3 ngh\u1ec9 ng\u01a1i.<\/p>\n\n\n\n
T\u00e1c h\u1ea1i c\u1ee7a ph\u00e1o n\u1ed5 v\u00e0 ph\u00e1o b\u00f4ng, ph\u00e1o hoa kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ebf. Trong qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o, v\u1eadn chuy\u1ec3n v\u00e0 \u0111\u1ed1t ph\u00e1o, n\u1ebfu kh\u00f4ng c\u1ea9n th\u1eadn th\u00ec s\u1ebd n\u1ed5, g\u00e2y ho\u1ea3 ho\u1ea1n v\u00e0 t\u1ea1o n\u00ean th\u01b0\u01a1ng vong. \u0110\u1ed1t ph\u00e1o g\u00e2y nhi\u1ec1u t\u00e1c h\u1ea1i nh\u01b0 th\u1ebf, n\u00ean nhi\u1ec1u th\u00e0nh ph\u1ed1 l\u1edbn \u1edf Trung Qu\u1ed1c \u0111\u00e3 c\u1ea5m \u0111\u1ed1t ph\u00e1o \u1edf nh\u1eefng khu v\u1ef1c quy \u0111\u1ecbnh.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: \u00d4 nhi\u1ec5m kh\u00f4ng kh\u00ed; Ti\u1ebfng \u1ed3n.<\/p>\n","protected":false},"excerpt":{"rendered":"
H\u1eb1ng n\u0103m khi \u0111\u1ebfn t\u1ebft, nhi\u1ec1u ng\u01b0\u1eddi r\u1ea5t th\u00edch \u0111\u1ed1t ph\u00e1o, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u1ebb em. \u0110\u1ed1t ph\u00e1o n\u1ed5 ho\u1eb7c \u0111\u1ed1t ph\u00e1o b\u00f4ng, ph\u00e1o hoa, m\u00e0u s\u1eafc mu\u00f4n v\u1ebb th\u1eadt l\u00e0 n\u00e1o nhi\u1ec7t! \u0110\u1ed1t ph\u00e1o b\u00f4ng, ph\u00e1o hoa \u0111\u1ec3 ch\u00fac m\u1eebng n\u0103m m\u1edbi \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t t\u1eadp t\u1ee5c k\u00e9o d\u00e0i nhi\u1ec1u n\u0103m \u1edf Trung […]<\/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-9585","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\/9585","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=9585"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9585\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}