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什麽潛伏在你的廚房台麵? (1)

(2010-06-24 17:42:20) 下一個
+++++++++++中文翻譯由計算機完成,原文來自”THE NEW YORK TIMES“。 ++++++++
>>>>>>>有些花崗岩的輻射和氡含量還是蠻高的。小心來自巴西和納米比亞的<<<<<<<

林恩的 Teaneck,N.J.,Sugarman 在兩年前湖喬治,N.Y.買回家她夏天的短前例行檢查發現它有的一種可以導致肺癌的放射性氣體氡,水平的升高。 所以,她叫氡測量減災技術人員查找源。 他去從房說博士 Sugarman,一名兒科醫生。 但他停止他當場在的廚房,豐富了粒霜、 褐紫紅色的花崗岩 countertops 中。

他蓋革計數器表示花崗岩冒出輻射水平比他有量在房子裏的其它地方高出 10 倍。 Sugarman 博士說,"我首先想到的是,女兒懷孕來度周末,"。 技術人員告訴她,使她的女兒幾英尺隻為安全起見,她說,"我讓他們出當天很翻錄"countertops 時,送往國家衛生部分析。 在的花崗岩原來,它包含鈾,而不隻是放射性釋放氡氣,它衰變的高的水平。

Sugarman 博士說: 「 我和我的家人的健康風險是可能小 」,「 但我認為這是一個不必要的風險 」。

隨著花崗岩 countertops 的普及已近十年 — — 對他們的需求已增至十倍,根據大理石美國研究所表示的花崗岩加工貿易組 — 有花崗岩可用的類型。 例如一個的來源 Graniteland (graniteland.com) 提供花崗岩的 900 多家的種來自 63 個國家。 並增加銷售數量和品種有"熱"或有潛在危險 countertops 尤其是巴西和納米比亞的外來更有橫紋品種的詳細報道。

What’s Lurking in Your Countertop?

SHORTLY before Lynn Sugarman of Teaneck, N.J., bought her summer home in Lake George, N.Y., two years ago, a routine inspection revealed it had elevated levels of radon, a radioactive gas that can cause lung cancer. So she called a radon measurement and mitigation technician to find the source. “He went from room to room,” said Dr. Sugarman, a pediatrician. But he stopped in his tracks in the kitchen, which had richly grained cream, brown and burgundy granite countertops. His Geiger counter indicated that the granite was emitting radiation at levels 10 times higher than those he had measured elsewhere in the house. “My first thought was, my pregnant daughter was coming for the weekend,” Dr. Sugarman said. When the technician told her to keep her daughter several feet from the countertops just to be safe, she said, “I had them ripped out that very day,” and sent to the state Department of Health for analysis. The granite, it turned out, contained high levels of uranium, which is not only radioactive but releases radon gas as it decays. “The health risk to me and my family was probably small,” Dr. Sugarman said, “but I felt it was an unnecessary risk.” As the popularity of granite countertops has grown in the last decade — demand for them has increased tenfold, according to the Marble Institute of America, a trade group representing granite fabricators — so have the types of granite available. For example, one source, Graniteland (graniteland.com) offers more than 900 kinds of granite from 63 countries. And with increased sales volume and variety, there have been more reports of “hot” or potentially hazardous countertops, particularly among the more exotic and striated varieties from Brazil and Namibia. 什麽潛伏在你的廚房台麵? (5) 2010-06-24 17:59:58 在哪裏查找測試和測試儀對查找認證的技術人員,以確定是否輻射或氡源於一個花崗岩台麵,業主可以聯係美國協會的氡科學家和技術專家 (aarst.org)。 測試 100 元至 300 元費用。 經認證的技術人員和自己動手氡測試工具包的信息是可用的環境保護署的網站,網址為 epa.gov/radon,以及從國家或地區的室內空氣環境辦公室,可以在 epa.gov/iaq/whereyoulive.html 找到。 工具包氡,不輻射,試驗和成本 20 美元至 30 美元。 他們賣的是在硬件存儲和聯機。 Where to Find Tests and Testers TO find a certified technician to determine whether radiation or radon is emanating from a granite countertop, homeowners can contact the American Association of Radon Scientists and Technologists (aarst.org). Testing costs between $100 and $300. Information on certified technicians and do-it-yourself radon testing kits is available from the Environmental Protection Agency’s Web site at epa.gov/radon, as well as from state or regional indoor air environment offices, which can be found at epa.gov/iaq/whereyoulive.html. Kits test for radon, not radiation, and cost $20 to $30. They are sold at hardware stores and online. [打印] [編輯] [刪除] 由阿團張貼 @ 2010-06-24 17:59:58 (4) 共 0 篇評論 發表評論 >>> 什麽潛伏在你的廚房台麵? (4) 2010-06-24 17:55:35 在 E.P.A.建議采取行動,如果家中的氡氣體水平超過 4 picocuries,每升空氣 (的放射性廢氣排放的措施) ; 有關相同風險作為吸煙半癌一包香煙每日。如果在博士衛生廚房讀數每升 100 picocuries。在她的地下室,氡讀數預計會更高,因為氣體通常滲透入住安老院的衰減鈾地下,閱讀了每升 6 picocuries。一般人是從自然和人為的來源,每年可達到 360 millirem (一被人體吸收能量措施),E.P.A.和核監督管理委員會等政府機構依法受到輻射。設置由核反應堆附近的居民委員會的額外暴露的限製為每 100 年 millirem。若要把這的角度來看,乘客上車宇宙輻射 3 millirem 航班從紐約到洛杉磯。 The E.P.A. recommends taking action if radon gas levels in the home exceeds 4 picocuries per liter of air (a measure of radioactive emission); about the same risk for cancer as smoking a half a pack of cigarettes per day. In Dr. Sugarman’s kitchen, the readings were 100 picocuries per liter. In her basement, where radon readings are expected to be higher because the gas usually seeps into homes from decaying uranium underground, the readings were 6 picocuries per liter. The average person is subjected to radiation from natural and manmade sources at an annual level of 360 millirem (a measure of energy absorbed by the body), according to government agencies like the E.P.A. and the Nuclear Regulatory Commission. The limit of additional exposure set by the commission for people living near nuclear reactors is 100 millirem per year. To put this in perspective, passengers get 3 millirem of cosmic radiation on a flight from New York to Los Angeles. [打印] [編輯] [刪除] 由阿團張貼 @ 2010-06-24 17:55:35 (16) 共 0 篇評論 發表評論 >>> 什麽潛伏在你的廚房台麵? (3) 2010-06-24 17:52:20 事實上,健康物理學家和放射專家同意大多數花崗岩 countertops 發出輻射與氡在極低的水平。 他們說這些廢氣是微不足道相比不斷下雨從外層空間或滲透了從地球的地殼的不用說源於人造源的所謂背景輻射,如 x 光片、 夜光手表和煙霧探測器。 但隨著規律在近幾個月中,環境保護署已被接收呼叫氡督察以及有關花崗岩 countertops 輻射測量幾次以上背景水平與有關業主。 "我們已經被聽到人們關注高的讀數在全國各地從"說盧 · 維特,該機構的室內環境部的一個程序分析師。 Indeed, health physicists and radiation experts agree that most granite countertops emit radiation and radon at extremely low levels. They say these emissions are insignificant compared with so-called background radiation that is constantly raining down from outer space or seeping up from the earth’s crust, not to mention emanating from manmade sources like X-rays, luminous watches and smoke detectors. But with increasing regularity in recent months, the Environmental Protection Agency has been receiving calls from radon inspectors as well as from concerned homeowners about granite countertops with radiation measurements several times above background levels. “We’ve been hearing from people all over the country concerned about high readings,” said Lou Witt, a program analyst with the agency’s Indoor Environments Division. [打印] [編輯] [刪除] 由阿團張貼 @ 2010-06-24 17:52:20 (26) 共 0 篇評論 發表評論 >>> 什麽潛伏在你的廚房台麵? (2) 2010-06-24 17:49:37 "這是不是危險的所有的花崗岩"說,赤柱 Liebert,質量保證主任在 CMT 實驗室中克利夫頓公園,N.Y.,Sugarman 博士的家曾輻射測量。 「 但我見到的幾個可能有點加熱您 Cheerios 」。 花崗岩 countertops 可能發出的氡和輻射的危險級別的指控提出了定期對在過去的十年大多由製造商和分銷商的競爭台麵材料。 美國的大理石研究所所說此類索賠是"可笑"的因為雖然花崗岩已知含有鈾、 釷和鉀等其他放射性材料,在 countertops 金額不足以構成健康威脅。 “It’s not that all granite is dangerous,” said Stanley Liebert, the quality assurance director at CMT Laboratories in Clifton Park, N.Y., who took radiation measurements at Dr. Sugarman’s house. “But I’ve seen a few that might heat up your Cheerios a little.” Allegations that granite countertops may emit dangerous levels of radon and radiation have been raised periodically over the past decade, mostly by makers and distributors of competing countertop materials. The Marble Institute of America has said such claims are “ludicrous” because although granite is known to contain uranium and other radioactive materials like thorium and potassium, the amounts in countertops are not enough to pose a health threat. [打印] [編輯] [刪除]
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