水资源保护
水資源保護
수자원보호
WATER RESOURCES PROTECTION
2014年
6期
67-70
,共4页
郭豪%温慧娜%宋庆国%穆伊舟
郭豪%溫慧娜%宋慶國%穆伊舟
곽호%온혜나%송경국%목이주
总有机碳%水质样品%保存条件%黄河水体
總有機碳%水質樣品%保存條件%黃河水體
총유궤탄%수질양품%보존조건%황하수체
total organic carbon (TOC)%water samples%preservation conditions%Yellow River water
水环境监测中,对于总有机碳的测量,国内外相关标准和规范对其水样保存条件缺乏统一要求。结合黄河水体的水质特点,重点选择pH值、保存时间、保存温度、前处理和水样浓度5个方面评估水样保存条件对总有机碳测试结果造成的影响。结果表明,在采样后24 h内不能及时测试的水样,必须改进保存方法,使水样的pH值小于2、水样运输及保存过程中以4℃冷藏、样品测试前充分混匀、避光密封保存。
水環境鑑測中,對于總有機碳的測量,國內外相關標準和規範對其水樣保存條件缺乏統一要求。結閤黃河水體的水質特點,重點選擇pH值、保存時間、保存溫度、前處理和水樣濃度5箇方麵評估水樣保存條件對總有機碳測試結果造成的影響。結果錶明,在採樣後24 h內不能及時測試的水樣,必鬚改進保存方法,使水樣的pH值小于2、水樣運輸及保存過程中以4℃冷藏、樣品測試前充分混勻、避光密封保存。
수배경감측중,대우총유궤탄적측량,국내외상관표준화규범대기수양보존조건결핍통일요구。결합황하수체적수질특점,중점선택pH치、보존시간、보존온도、전처리화수양농도5개방면평고수양보존조건대총유궤탄측시결과조성적영향。결과표명,재채양후24 h내불능급시측시적수양,필수개진보존방법,사수양적pH치소우2、수양운수급보존과정중이4℃랭장、양품측시전충분혼균、피광밀봉보존。
In water environmental monitoring , there is no unified demand for water sample preservation in terms of the detection of total organic carbon ( TOC) according to related domestic and international standards .The effects of the water samples ’ preservation conditions , including the pH value , holding time , preservation temperature , pretreatment , and water sample concentration , on the detection of TOC were assessed based on the water quality characteristics of the Yellow River .The results show that , if the samples could not be tested in 24 hours , they have to be acidified to pH ≤2, refrigerated at 4℃ in a refrigerator, homogenized in a blender before detection , and protected from light and atmospheric oxygen .