根據倫敦帝國學院最新發表的研究指出,日常生活中的電器用品,如電腦及其他現代化商品所產生的過量靜電,都會形成電場,這些電場可能對您的健康造成不良影響。研究發現,電場所造成的風險遠高於過去一般的認知。不過,只要在家中、辦公室和醫院採取一些簡單的措施,就有助減少這些風險。
這份研究發表於8月份的《大氣環境》(Atmospheric Environment)期刊,研究顯示,長期暴露在由日常室內環境所產生的電場中,會增加罹患呼吸道疾病及感染空氣傳染物如過敏原、細菌和病毒的風險。
帝國學院環境政策中心的詹米森(Keith Jamieson)是本篇研究的主筆作者,他表示:「許多導致高量電場、或沈積量及污染量增加的因素,經常在醫院的病房環境,或有『辦公大樓症候群』病患的建築物中發現。」
研究同時發現,電場會大幅降低環境中帶電氧分子的濃度。帶電氧分子是一種微小的空氣離子,它能夠提高生理功能的運作,並且殺死有害的微生物。
電場的高低會隨著室內空氣溼度而變化。當溼度低於20-30%時,電場會明顯提高,增加微粒物質累積在人類肺部或皮膚的情形,而發生感染。
不過,詹米森也提到,其實有很多簡單的方式,可以幫助我們在工作場合或家中減少有毒物質對我們身體造成的負擔,並降低由電場所傳播的病痛與感染。
以電器用品為例,尤其是筆記型電腦,接上地線就可以大量降低電場。
至於人與人之間所產生的靜電,詹米森建議慎選衣物質料及溼度水準,即可產生平衡的二極離解狀態,亦可大幅降低電場問題。當然,儘量不要待在高電場的環境,同時,在不使用電器時,記得拔掉插頭也是極佳的作法。
Electrical fields generated by everyday electrical equipment such as computers, and excess static electricity created by many modern materials, could be bad for your health, according to new research published by scientists at the Imperial College London. The study found such risks are far higher than previously thought, but simple actions can be taken in home, office and hospital to help reduce them.
The study, published in the August issue of the journal "Atmospheric Environment," indicates that prolonged exposure to the electrical fields generated in everyday indoor environments may cause increased risk of respiratory diseases and infection from small airborne particles such as allergens, bacteria and viruses.
Keith Jamieson of Imperial's Centre for Environmental Policy, lead author of the paper, says, "Many of the factors that can cause high electric fields and increased deposition and contamination are often found in hospital ward environments and in buildings where incidents of sick building syndrome are noted.
Electrical fields also have been shown by the authors to "significantly reduce" localized concentrations of charged molecular oxygen, a type of small air ion, that enhances biological functioning and kills harmful microbes.
Electric field levels can also vary with the humidity levels of indoor air. Levels below 20-30 percent humidity cause marked increases in the level of electrical fields that can be generated, increasing incidents of particle deposition in people's lungs and on their skin, resulting in infections.
But Jamieson says there are a number of simple actions to take at work and at home that can help reduce the toxic load our bodies have to deal with and the risk of illness and infection being transmitted in this way.
"In the case of electrical equipment, particularly laptops, ensuring they are earthed [grounded] can often greatly reduce fields," he said.
"In terms of the electrostatic charge generated by people themselves," he advises, "careful selection of materials and humidity levels can significantly reduce problems as can balanced bipolar air ionization."
"Trying to avoid spending time in areas where high fields are created, and unplugging electrical equipment when not in use, are also good options."
全文及圖片詳見 ENS