Nhi\u1ec1u khi do kh\u00f4ng c\u1ea9n th\u1eadn, qu\u1ea7n \u00e1o c\u00f3 th\u1ec3 b\u1ecb hoen \u1ed1 do c\u00e1c v\u1ebft d\u1ea7u, v\u1ebft m\u1ef1c, v\u1ebft \u1ed1 \u0111en.<\/p>\n\n\n\n
Li\u1ec7u c\u00f3 c\u00e1ch n\u00e0o t\u1ea9y s\u1ea1ch \u0111\u01b0\u1ee3c ch\u00fang tr\u00ean qu\u1ea7n \u00e1o kh\u00f4ng? X\u0103ng c\u00f3 th\u1ec3 g\u1ed9t r\u1eeda c\u00e1c v\u1ebft d\u1ea7u c\u0169ng d\u1ec5 d\u00e0ng nh\u01b0 n\u01b0\u1edbc c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch mu\u1ed1i \u0103n tr\u00ean v\u1ea3i. N\u1ebfu khi \u0103n c\u01a1m, b\u1ea1n v\u00f4 \u00fd \u0111\u1ec3 gi\u1ecdt canh r\u01a1i v\u00e0o qu\u1ea7n \u00e1o, khi s\u1eeda ch\u1eefa xe \u0111\u1ea1p \u0111\u1ec3 v\u1ebft d\u1ea7u xe d\u00ednh v\u00e0o qu\u1ea7n \u00e1o, b\u1ea1n ch\u1edb c\u00f3 lo, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng x\u0103ng g\u1ed9t s\u1ea1ch nh\u1eb9 nh\u00e0ng v\u1ebft m\u1ee1, v\u1ebft d\u1ea7u tr\u00ean qu\u1ea7n \u00e1o.<\/p>\n\n\n\n
Nhi\u1ec1u h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 nh\u01b0 tetraclorua cacbon, este etylat etyl c\u0169ng c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch v\u1ebft d\u1ea7u m\u1ee1. Ch\u1ec9 c\u00f3 \u0111i\u1ec1u c\u00e1c h\u1ee3p ch\u1ea5t n\u00e0y kh\u00f3 ki\u1ebfm h\u01a1n x\u0103ng. V\u1ebft m\u1ef1c \u0111en, v\u1ebft nh\u1ecd \u0111en l\u00e0 do m\u1ed3 h\u00f3ng t\u1ea1o ra. V\u1ec1 m\u1eb7t ho\u00e1 h\u1ecdc, m\u1ed3 h\u00f3ng ch\u00ednh l\u00e0 b\u1ed9t m\u1ecbn cacbon. Theo c\u00e1c t\u00e0i li\u1ec7u, s\u00e1ch ho\u00e1 h\u1ecdc, kh\u00f4ng c\u00f3 b\u1ea5t c\u1ee9 ch\u1ea5t g\u00ec c\u00f3 th\u1ec3 tr\u1eeb b\u1ecf \u0111\u01b0\u1ee3c v\u1ebft nh\u1ecd \u0111en, m\u1ef1c \u0111en. N\u00ean mu\u1ed1n d\u00f9ng m\u1ed9t ch\u1ea5t n\u00e0o \u0111\u00f3 c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch \u0111\u01b0\u1ee3c v\u1ebft m\u1ef1c \u0111en, v\u1ebft nh\u1ecd n\u1ed3i l\u00e0 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
Tuy nhi\u00ean c\u0169ng c\u00f3 th\u1ec3 t\u00ecm m\u1ed9t bi\u1ec7n ph\u00e1p: Khi c\u00f3 v\u1ebft nh\u1ecd \u0111en d\u00ednh v\u00e0o qu\u1ea7n \u00e1o, b\u1ea1n \u0111em qu\u1ea7n \u00e1o ng\u00e2m v\u00e0o n\u01b0\u1edbc, d\u00f9ng c\u01a1m x\u00e1t v\u00e0o, nh\u1edd \u0111\u00f3 c\u00f3 th\u1ec3 t\u1ea9y \u0111i v\u1ebft \u0111en. Th\u1ebf nh\u01b0ng n\u1ebfu v\u1ebft \u0111en b\u00e1m v\u00e0o \u0111\u00e3 l\u00e2u th\u00ec vi\u1ec7c t\u1ea9y s\u1ea1ch \u0111i l\u00e0 kh\u00f4ng d\u1ec5.<\/p>\n\n\n\n
C\u00f2n khi c\u00f3 v\u1ebft m\u1ef1c xanh \u0111en d\u00ednh v\u00e0o qu\u1ea7n \u00e1o, th\u00ec vi\u1ec7c t\u1ea9y s\u1ea1ch v\u1ebft m\u1ef1c n\u00e0y th\u1ef1c hi\u1ec7n kh\u00e1 d\u1ec5 d\u00e0ng. C\u00f3 th\u1ec3 d\u00f9ng ho\u00e1 ch\u1ea5t \u0111\u1ec3 t\u1ea9y tr\u1eafng \u0111i. Th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu c\u1ee7a m\u1ef1c xanh \u0111en l\u00e0 tanin – s\u1eaft (II), trong kh\u00f4ng kh\u00ed, tanin – s\u1eaft (II) b\u1ecb oxy ho\u00e1 th\u00e0nh tanin – s\u1eaft (III). H\u1ee3p ch\u1ea5t tanin – s\u1eaft (II) c\u00f3 th\u1ec3 ho\u00e0 tan v\u00e0o n\u01b0\u1edbc nh\u01b0ng tanin – s\u1eaft (III) kh\u00f4ng ho\u00e0 tan trong n\u01b0\u1edbc m\u00e0 cho k\u1ebft t\u1ee7a m\u00e0u \u0111en. V\u00ec v\u1eady n\u1ebfu qu\u1ea7n \u00e1o c\u1ee7a b\u1ea1n b\u1ecb d\u00ednh v\u1ebft m\u1ef1c xanh \u0111en, n\u1ebfu \u0111em g\u1ed9t v\u00e0o n\u01b0\u1edbc s\u1ea1ch ngay th\u00ec c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch ho\u00e0n to\u00e0n. Nh\u01b0ng n\u1ebfu v\u1ebft m\u1ef1c b\u1ecb d\u00ednh l\u00e2u ng\u00e0y th\u00ec kh\u00f4ng d\u1ec5 g\u1ed9t s\u1ea1ch \u0111\u01b0\u1ee3c. N\u1ebfu b\u1ea1n d\u00f9ng ch\u1ea5t kh\u1eed \u0111\u1ec3 kh\u1eed tanin – s\u1eaft (III) th\u00e0nh tanin – s\u1eaft (II) th\u00ec l\u1ea1i c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch. V\u00ec v\u1eady n\u1ebfu d\u00f9ng axit oxalic \u0111\u1ec3 g\u1ed9t v\u1ebft m\u1ef1c xanh \u0111en th\u00ec c\u00f3 th\u1ec3 t\u1ea9y s\u1ea1ch \u0111\u01b0\u1ee3c v\u1ebft m\u1ef1c xanh \u0111en. Axit oxalic l\u00e0 nh\u1eefng tinh th\u1ec3 m\u00e0u tr\u1eafng, l\u00e0 m\u1ed9t lo\u1ea1i nguy\u00ean li\u1ec7u quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p, c\u00f3 m\u1eb7t \u1edf h\u1ea7u h\u1ebft c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: V\u1ebft \u1ed1; Ch\u1ea5t kh\u1eed b\u1ecf v\u1ebft \u1ed1.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Nhi\u1ec1u khi do kh\u00f4ng c\u1ea9n th\u1eadn, qu\u1ea7n \u00e1o c\u00f3 th\u1ec3 b\u1ecb hoen \u1ed1 do c\u00e1c v\u1ebft d\u1ea7u, v\u1ebft m\u1ef1c, v\u1ebft \u1ed1 \u0111en. Li\u1ec7u c\u00f3 c\u00e1ch n\u00e0o t\u1ea9y s\u1ea1ch \u0111\u01b0\u1ee3c ch\u00fang tr\u00ean qu\u1ea7n \u00e1o kh\u00f4ng? X\u0103ng c\u00f3 th\u1ec3 g\u1ed9t r\u1eeda c\u00e1c v\u1ebft d\u1ea7u c\u0169ng d\u1ec5 d\u00e0ng nh\u01b0 n\u01b0\u1edbc c\u00f3 th\u1ec3 g\u1ed9t s\u1ea1ch mu\u1ed1i \u0103n tr\u00ean v\u1ea3i. […]<\/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":[8,15],"tags":[],"class_list":["post-8024","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8024","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=8024"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8024\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}