中國居民飲用水中鈣鎂及其相關(guān)指標(biāo)適宜保留水平的探討
發(fā)布時間:2018-06-21 09:43
本文選題:飲用水 + 鈣; 參考:《給水排水》2017年10期
【摘要】:通過分析中國人膳食途徑和飲水途徑獲取鈣鎂元素現(xiàn)狀,得出中國人膳食鈣攝取嚴(yán)重不足、鎂攝取也處于邊緣性缺乏的狀況,而飲水途徑可以提供人體鈣和鎂每日推薦量的7.3%~9.7%和4.7%~5.7%(按照自來水和瓶裝水鈣鎂含量中位數(shù)計算)。作者建議,優(yōu)質(zhì)天然水源應(yīng)盡量避免深度處理,以便最大限度地保留水中天然礦物元素。當(dāng)必須對水進(jìn)行深度處理時,建議設(shè)定飲用水中鈣、鎂、硬度以及溶解性總固體的最低可接受水平(LALs)分別為25mg/L、10mg/L、100mg/L、100mg/L,以防范因食物鈣鎂獲取不足而產(chǎn)生的人群健康風(fēng)險。
[Abstract]:By analyzing the present situation of calcium and magnesium intake in Chinese diet and drinking water, it is concluded that the dietary calcium intake of Chinese people is seriously inadequate, and magnesium intake is also in the condition of marginal deficiency. The drinking route can provide 7.7% of daily recommended calcium and magnesium and 4.7% of the daily recommended amount of calcium and magnesium (calculated according to the median calcium and magnesium content in tap water and bottled water). The authors suggest that advanced treatment should be avoided as far as possible so that natural mineral elements in water can be preserved to the maximum extent. When advanced treatment of water is necessary, it is recommended that the minimum acceptable levels of calcium, magnesium, hardness and soluble solids in drinking water be 25 mg / L 10 mg / L or 100 mg / L 100 mg / L, respectively, to guard against population health risks arising from inadequate access to food calcium and magnesium.
【作者單位】: 陸軍軍醫(yī)大學(xué)軍事預(yù)防醫(yī)學(xué)院環(huán)境衛(wèi)生學(xué)教研室;清華大學(xué)清華大學(xué)環(huán)境學(xué)院-碧水源環(huán)境膜技術(shù)研發(fā)中心;清華大學(xué)環(huán)境學(xué)院環(huán)境模擬與污染控制國家重點(diǎn)聯(lián)合實(shí)驗(yàn)室;
【分類號】:R123
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