{"id":1999,"date":"2018-09-07T15:17:43","date_gmt":"2018-09-07T08:17:43","guid":{"rendered":"http:\/\/vinatom.gov.vn\/?p=1999"},"modified":"2023-11-29T10:36:11","modified_gmt":"2023-11-29T03:36:11","slug":"ket-qua-thuc-hien-de-tai-cap-co-so-xac-dinh-210-pb-trong-mau-sol-khi-bang-ky-thuat-phan-tich-hat-nhan","status":"publish","type":"post","link":"https:\/\/vinatom.gov.vn\/ket-qua-thuc-hien-de-tai-cap-co-so-xac-dinh-210-pb-trong-mau-sol-khi-bang-ky-thuat-phan-tich-hat-nhan\/","title":{"rendered":"K\u1ebft qu\u1ea3 th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i c\u1ea5p C\u01a1 s\u1edf \u201cX\u00e1c \u0111\u1ecbnh 210-Pb trong m\u1eabu sol kh\u00ed b\u1eb1ng k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch h\u1ea1t nh\u00e2n\u201d"},"content":{"rendered":"<p style=\"text-align: justify;\">Nhi\u1ec7m v\u1ee5 khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ea5p c\u01a1 s\u1edf <strong>\u201cX\u00e1c \u0111\u1ecbnh <sup>210<\/sup>Pb trong m\u1eabu sol kh\u00ed b\u1eb1ng k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch h\u1ea1t nh\u00e2n\u201d<\/strong> do ThS. D\u01b0\u01a1ng \u0110\u1ee9c Th\u1eafng l\u00e0m ch\u1ee7 nhi\u1ec7m \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t giao th\u1ef1c hi\u1ec7n trong th\u1eddi gian 01 n\u0103m t\u1eeb th\u00e1ng 01\/2017 \u0111\u1ebfn 12\/2017.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\"><sup>210<\/sup>Pb l\u00e0 \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 c\u00f3 ngu\u1ed3n g\u1ed1c t\u1ef1 nhi\u00ean, thu\u1ed9c chu\u1ed7i ph\u00e2n r\u00e3 ph\u00f3ng x\u1ea1 <sup>238<\/sup>U. <sup>210<\/sup>Pb c\u00f3 th\u1eddi gian b\u00e1n r\u00e3 22.20 n\u0103m, \u0111\u1ec9nh ph\u1ed5 gamma \u0111\u1eb7c tr\u01b0ng 46.539 keV v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 4.25%. Trong sol kh\u00ed, <sup>210<\/sup>Pb ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c sinh ra t\u1eeb kh\u00ed tr\u01a1 ph\u00f3ng x\u1ea1 <sup>222<\/sup>Rn, \u0111\u00e2y c\u0169ng l\u00e0 s\u1ea3n ph\u1ea9m trong chu\u1ed7i ph\u00e2n r\u00e3 c\u1ee7a <sup>238<\/sup>U. Li\u1ec1u hi\u1ec7u d\u1ee5ng h\u00e0ng n\u0103m sinh ra do <sup>210<\/sup>Pb kh\u00f4ng cao ch\u1ec9 v\u00e0i ch\u1ee5c \u00b5Sv nh\u01b0ng n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00e1 ph\u1ed5 bi\u1ebfn trong nghi\u00ean c\u1ee9u m\u00f4i tr\u01b0\u1eddng nh\u01b0 x\u00e1c \u0111\u1ecbnh tu\u1ed5i tr\u1ea7m t\u00edch, t\u1ed1c \u0111\u1ed9 r\u01a1i l\u1eafng, th\u1eddi gian l\u01b0u tr\u00fa c\u1ee7a sol kh\u00ed, qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n trong kh\u00ed quy\u1ec3n. V\u00ec v\u1eady vi\u1ec7c x\u00e2y d\u1ef1ng quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 <sup>210<\/sup>Pb trong \u00a0sol kh\u00ed l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">M\u1ee5c ti\u00eau c\u1ee7a \u0111\u1ec1 t\u00e0i l\u00e0 x\u00e2y d\u1ef1ng quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9 ph\u00f3ng x\u1ea1 c\u1ee7a <sup>210<\/sup>Pb trong m\u1eabu sol kh\u00ed v\u00e0 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 r\u01a1i l\u1eafng c\u1ee7a <sup>210<\/sup>Pb. \u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau n\u00e0y, nh\u00f3m t\u00e1c gi\u1ea3 \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c n\u1ed9i dung nghi\u00ean c\u1ee9u ch\u00ednh nh\u01b0 sau:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Nghi\u00ean c\u1ee9u t\u1ed5ng quan v\u1ec1 \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 <sup>210<\/sup>Pb v\u00e0 ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh <sup>210<\/sup>Pb trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng kh\u00ed;<\/li>\n<li>X\u00e2y d\u1ef1ng quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh <sup>210<\/sup>Pb trong m\u1eabu sol kh\u00ed v\u00e0 r\u01a1i l\u1eafng;<\/li>\n<li>X\u00e1c \u0111\u1ecbnh n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 <sup>210<\/sup>Pb v\u00e0 t\u1ed1c \u0111\u1ed9 r\u01a1i l\u1eafng c\u1ee7a <sup>210<\/sup>Pb trong m\u1eabu sol kh\u00ed.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Trong qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i, thi\u1ebft b\u1ecb l\u1ea5y m\u1eabu sol kh\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 m\u00e1y l\u1ea5y m\u1eabu t\u1ed5ng b\u1ee5i l\u01a1 l\u1eedng trong kh\u00f4ng kh\u00ed model TE-5170DV-BLX c\u1ee7a h\u00e3ng TISCH Environmental (h\u00ecnh 1). \u0110\u00e2y l\u00e0 m\u00e1y l\u1ea5y m\u1eabu kh\u00ed c\u00f3 t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thu g\u00f3p t\u1ed5ng b\u1ee5i l\u01a1 l\u1eedng trong kh\u00f4ng kh\u00ed. Thi\u1ebft k\u1ebf v\u1eadt l\u00fd c\u1ee7a b\u1ed9 l\u1ea5y m\u1eabu d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc kh\u00ed \u0111\u1ed9ng h\u1ecdc nh\u1eb1m thu th\u1eadp c\u00e1c h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc 100 micron v\u00e0 nh\u1ecf h\u01a1n. Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo ti\u00eau chu\u1ea9n c\u1ee7a C\u01a1 quan b\u1ea3o v\u1ec7 M\u00f4i tr\u01b0\u1eddng Hoa K\u1ef3 (US. EPA) v\u00e0 c\u00f3 t\u1ed1c \u0111\u1ed9 h\u00fat kh\u00ed khi c\u00f3 phin l\u1ecdc s\u1ee3i th\u1ee7y tinh Whatman n\u1eb1m trong d\u1ea3i\u00a0 t\u1eeb 1.1 m<sup>3<\/sup>\/ph\u00fat \u0111\u1ebfn 1.8 m<sup>3<\/sup>\/ph\u00fat v\u1edbi sai s\u1ed1 0.02 m<sup>3<\/sup>\/ph\u00fat. \u00a0M\u1ed7i m\u1eabu sol kh\u00ed \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u00a0thu g\u00f3p trong 24 gi\u1edd. M\u1eabu \u0111\u01b0\u1ee3c thu g\u00f3p li\u00ean t\u1ee5c trong 01 tu\u1ea7n, m\u1ed7i ng\u00e0y 8 gi\u1edd v\u1edbi l\u01b0u l\u01b0\u1ee3ng\u00a0 kh\u00ed qua phin l\u1ecdc trung b\u00ecnh l\u00e0 1.21 m<sup>3<\/sup>\/ph\u00fat. Nh\u01b0 v\u1eady t\u1ed5ng l\u01b0\u1ee3ng kh\u00ed trung b\u00ecnh qua phin l\u1ecdc l\u00e0 4065.6 m<sup>3<\/sup>. Phin l\u1ecdc tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng v\u00e0 m\u1eabu sau khi thu g\u00f3p \u0111\u01b0\u1ee3c s\u1ea5y \u1edf nhi\u1ec7t \u0111\u1ed9 60<sup>o<\/sup>C trong t\u1ee7 s\u1ea5y ch\u00e2n kh\u00f4ng \u0111\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ed5i (th\u1eddi gian s\u1ea5y \u00b3 24 ti\u1ebfng).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13328\" src=\"http:\/\/tvdt.vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.1.png\" alt=\"\" width=\"255\" height=\"379\" srcset=\"https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.1.png 255w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.1-202x300.png 202w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.1-101x150.png 101w\" sizes=\"auto, (max-width: 255px) 100vw, 255px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">C\u00e1c m\u1eabu sol kh\u00ed \u0111\u01b0\u1ee3c \u0111o tr\u00ean h\u1ec7 ph\u1ed5 k\u1ebf gamma ph\u00f4ng th\u1ea5p HPGe GMX 40P4 v\u1edbi th\u1eddi gian trung b\u00ecnh kho\u1ea3ng 24 gi\u1edd, sai s\u1ed1 th\u1ed1ng k\u00ea di\u1ec7n t\u00edch quang \u0111\u1ec9nh c\u1ee7a <sup>210<\/sup>Pb \u0111\u1ea1t \u00a3 2%. Do \u0111\u1ec9nh <sup>210<\/sup>Pb c\u00f3 duy nh\u1ea5t m\u1ed9t \u0111\u1ec9nh ph\u1ed5 gamma \u0111\u1eb7c tr\u01b0ng l\u00e0 46.539 keV, \u0111\u00e2y c\u0169ng l\u00e0 v\u00f9ng n\u0103ng l\u01b0\u1ee3ng th\u1ea5p c\u00f3 nhi\u1ec1u can nhi\u1ec5u v\u00e0 r\u1ea5t kh\u00f3 kh\u0103n trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c hi\u1ec7u xu\u1ea5t ghi c\u1ee7a h\u1ec7 ph\u1ed5 k\u1ebf gamma. Trong \u0111\u1ec1 t\u00e0i, hi\u1ec7u su\u1ea5t ghi c\u1ee7a h\u1ec7 ph\u1ed5 k\u1ebf \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh k\u1ebft h\u1ee3p t\u00ednh to\u00e1n m\u00f4 ph\u1ecfng s\u1eed d\u1ee5ng ch\u01b0\u01a1ng tr\u00ecnh MCNP 6.1 v\u1edbi \u0111o \u0111\u1ea1c th\u1ef1c nghi\u1ec7m s\u1eed d\u1ee5ng m\u1eabu chu\u1ea9n IAEA-RGU-1 (h\u00ecnh 2). K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t ghi \u0111\u00e3 \u0111\u01b0\u1ee3c nh\u00f3m t\u00e1c gi\u1ea3 tr\u00ecnh b\u00e0y chi ti\u1ebft trong b\u00e1o c\u00e1o t\u1ed5ng k\u1ebft v\u00e0 b\u00e0i b\u00e1o \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed Nuclear Science and Technology c\u1ee7a Vi\u1ec7n N\u0103ng l\u01b0\u1ee3ng nguy\u00ean t\u1eed Vi\u1ec7t Nam.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13327\" src=\"http:\/\/tvdt.vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.2.jpg\" alt=\"\" width=\"627\" height=\"314\" srcset=\"https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.2.jpg 627w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.2-300x150.jpg 300w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.2-150x75.jpg 150w\" sizes=\"auto, (max-width: 627px) 100vw, 627px\" \/><\/p>\n<p style=\"text-align: center;\"><em>H\u00ecnh 2. M\u00f4 ph\u1ecfng detector, m\u1eabu chu\u1ea9n v\u00e0 m\u1eabu sol kh\u00ed<\/em><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">S\u1ea3n ph\u1ea9m c\u1ee7a \u0111\u1ec1 t\u00e0i ngo\u00e0i 01 b\u00e0i b\u00e1o, nh\u00f3m t\u00e1c gi\u1ea3 \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c 02 <span style=\"text-decoration: line-through;\">\u00a0\u00a0<\/span>quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh <sup>210<\/sup>Pb trong m\u1eabu sol kh\u00ed v\u00e0 trong m\u1eabu r\u01a1i l\u1eafng. Hai quy tr\u00ecnh \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m ph\u00e2n t\u00edch ph\u00f3ng x\u1ea1 M\u00f4i tr\u01b0\u1eddng. T\u1eeb quy tr\u00ecnh \u0111\u00e3 x\u00e2y d\u1ef1ng, nh\u00f3m t\u00e1c gi\u1ea3 c\u0169ng \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 <sup>210<\/sup>Pb trong sol kh\u00ed theo tu\u1ea7n n\u1eb1m trong kho\u1ea3ng t\u1eeb 0.12 mBq.m<sup>-3<\/sup> \u0111\u1ebfn 2.87 mBq.m<sup>-3<\/sup> v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh l\u00e0 0.92 mBq.m<sup>-3<\/sup> (h\u00ecnh 3) v\u00e0 t\u00ecm \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 r\u01a1i l\u1eafng c\u1ee7a <sup>210<\/sup>Pb \u00a0theo th\u00e1ng trong kho\u1ea3ng t\u1eeb 7.76 Bq.m<sup>-2<\/sup> \u0111\u1ebfn 35.41 Bq.m<sup>-2<\/sup> v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh l\u00e0 19.74 Bq.m<sup>-2 <\/sup>(h\u00ecnh 4).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13326\" src=\"http:\/\/tvdt.vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3.png\" alt=\"\" width=\"3216\" height=\"2461\" srcset=\"https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3.png 3216w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-300x230.png 300w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-1024x784.png 1024w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-150x115.png 150w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-768x588.png 768w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-1536x1175.png 1536w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-2048x1567.png 2048w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-80x60.png 80w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-696x533.png 696w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-1068x817.png 1068w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-549x420.png 549w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.3-1920x1469.png 1920w\" sizes=\"auto, (max-width: 3216px) 100vw, 3216px\" \/><\/p>\n<p style=\"text-align: center;\"><em>H\u00ecnh 3. Ph\u00e2n b\u1ed1 n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 <sup>210<\/sup>Pb theo tu\u1ea7n<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13325\" src=\"http:\/\/tvdt.vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4.jpg\" alt=\"\" width=\"1267\" height=\"885\" srcset=\"https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4.jpg 1267w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-300x210.jpg 300w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-1024x715.jpg 1024w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-150x105.jpg 150w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-768x536.jpg 768w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-100x70.jpg 100w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-696x486.jpg 696w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-1068x746.jpg 1068w, https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2018\/09\/07.9.18.4-601x420.jpg 601w\" sizes=\"auto, (max-width: 1267px) 100vw, 1267px\" \/><\/p>\n<p style=\"text-align: center;\"><em>H\u00ecnh 4. M\u1eadt \u0111\u1ed9 <sup>210<\/sup>Pb r\u01a1i l\u1eafng theo th\u00e1ng<\/em><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">\u0110\u1ec1 t\u00e0i c\u0169ng \u0111\u00e3 b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c m\u1ed1i t\u01b0\u01a1ng quan ng\u01b0\u1ee3c gi\u1eefa n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 <sup>210<\/sup>Pb trong sol kh\u00ed v\u00e0 r\u01a1i l\u1eafng v\u1edbi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh. C\u00e1c nh\u00e2n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean n\u00f3i chung v\u00e0 <sup>210<\/sup>Pb n\u00f3i ri\u00eang \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t ch\u1ec9 th\u1ecb \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e1c qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n trong kh\u00ed quy\u1ec3n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y c\u00f3 \u00fd ngh\u0129a th\u1ef1c ti\u1ec5n trong vi\u1ec7c cung c\u1ea5p th\u00eam c\u00e1c d\u1eef li\u1ec7u v\u1ec1 n\u1ed3ng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9 c\u1ee7a <sup>210<\/sup>Pb \u1edf v\u00f9ng nhi\u1ec7t \u0111\u1edbi. \u0110\u1ec3 s\u1eed d\u1ee5ng nh\u00e2n ph\u00f3ng x\u1ea1 <sup>210<\/sup>Pb l\u00e0m ch\u1ea5t \u0111\u00e1nh d\u1ea5u \u0111\u00f2i h\u1ecfi c\u1ea7n ph\u1ea3i c\u00f3 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a nh\u00e2n ph\u00f3ng x\u1ea1 trong nhi\u1ec1u n\u0103m v\u00ec v\u1eady nh\u00f3m t\u00e1c gi\u1ea3 \u0111\u1ec1 xu\u1ea5t n\u00ean \u0111\u01b0a <sup>210<\/sup>Pb v\u00e0o ch\u01b0\u01a1ng tr\u00ecnh quan tr\u1eafc ph\u00f3ng x\u1ea1 h\u00e0ng n\u0103m.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">\u0110\u1ec1 t\u00e0i \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u1ec7m thu ch\u00ednh th\u1ee9c ng\u00e0y 16\/7\/2018 v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 lo\u1ea1i t\u1ed1t.<em style=\"background-color: transparent;\">\u00a0<\/em><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: right;\"><strong><em>Vi\u1ec7n Khoa h\u1ecdc v\u00e0 K\u1ef9 thu\u1eadt h\u1ea1t nh\u00e2n<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nhi\u1ec7m v\u1ee5 khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ea5p c\u01a1 s\u1edf \u201cX\u00e1c \u0111\u1ecbnh 210Pb trong m\u1eabu sol kh\u00ed b\u1eb1ng k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch h\u1ea1t nh\u00e2n\u201d do ThS. D\u01b0\u01a1ng \u0110\u1ee9c Th\u1eafng l\u00e0m ch\u1ee7 nhi\u1ec7m \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t giao th\u1ef1c hi\u1ec7n trong th\u1eddi gian 01 n\u0103m t\u1eeb th\u00e1ng 01\/2017 \u0111\u1ebfn 12\/2017. &nbsp; 210Pb l\u00e0 \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13328,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,24,16],"tags":[],"class_list":["post-1999","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hoat-dong-nghien-cuu-trien-khai","category-tin-hoat-dong-cua-vien","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts\/1999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/comments?post=1999"}],"version-history":[{"count":2,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts\/1999\/revisions"}],"predecessor-version":[{"id":13330,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts\/1999\/revisions\/13330"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/media\/13328"}],"wp:attachment":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/media?parent=1999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/categories?post=1999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/tags?post=1999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}