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检汞试纸使用说明 方法编号：CDC-9002 1 适用范围：本方法适用于水和化妆品中汞离子的现场快速筛查，检出限0.5ppm(mg/kg,L)。 2 检测意义：凡是可溶于水的汞化物皆系剧毒物。饮用水污染或食物污染、都可对人体造成危害。由于汞化物具有在短期内使黑色素减退，令皮肤美白、毛孔变细、斑痘消退等功能，因此而被一些企业非法添加到化妆品中，而且加入的量通常都比较大。 3 器材配置：试纸30片，对照色卡1片。10ml试管和采样勺各1个。 4
样品处理 4.1无色液体：直接检测。 4.2固体或半固体样品：取粉碎后的固体样品或半固体样品如乳膏1g或2.5g或5g于10ml具塞试管中，加入蒸馏水或纯净水到10ml，充分振摇后浸泡10分钟以上。 5
检测步骤 5.1取1条试纸，插入到无色液体或处理后的样品上清液或白色乳浊液中1cm左右处，3秒钟后取出，放置3分钟后，将试纸上的色斑与对照色卡比对，找出相同或相近的色阶。 5.2如果样品没有被稀释，色阶旁边标注的数值即为样中的含汞量mg/L。如果数据大于100mg/L，可以减少取样量稀释后重新测定，计算结果时，乘上稀释倍数即可。 5.3如果样品进行了稀释，记录下色阶旁边标注的数值，乘以样品稀释倍数，即为样中的含汞量mg/kg。（取样量1g的乘以10，取样量2.5g的乘以4，取样量5g的乘以2 ）。 6说明 6.1本方法检测的是能够游离到水中的汞离子。医用黄氧化汞软膏含量达到2% ,可直接与试纸反应生成深桔红色。 6.2为了便于对比观察判断，可以用纯净水做一份空白对照。样品试纸颜色深于空白试纸颜色即为检出。注意：测试的样品是无色液体或处理后的样品上清液或白色乳浊液。 6.3本方法是现场快速检测方法，精确定量应以国标法为准。 6.4饮用水中汞的限量标准为≤0.001mg/L。 6.5化妆品中汞的限量标准为≤1mg/kg。（如果取样1g后10倍稀释，或2.5g后4倍稀释，试纸所显颜色色度都不得大于或等于对照色卡1号色斑0.5mg/kg。如果取样5g后2倍稀释，试纸所显颜色深度不得大于对照色卡2号色斑1mg/kg）。如果人为加入汞化物，通常不会低于100mg/kg。 6.6食品中汞的限量指标以Hg计，基本都在0.3mg/Kg以下
。 6.7试纸保质期2年，生产日期见包装处。 7案例 案例1：标示珠海**化妆品公司生产的九芝堂无暇美白祛斑霜（保质期2012.7.8）含汞量25335mg/kg。 案例2：标示**实业公司生产的韵牌20天祛斑（1、2号），日霜含汞量11523mg/kg，晚霜含8575mg/kg。 案例3：标示为深圳**化妆品公司生产的“丽一汀草本白里透红二合一”（批号2009510含汞量15473mg/kg） 中华预防医学会科技成果获奖项目 北京食安迅达科技有限公司出品 电话: 010-87703877 网址：www.bjsaxd.com
Mercury test
paper instructions 1.Scope
of application: This method is suitable for metallic
mercury ion in water and cosmetics field rapid screening. detection limit of
0.5 ppm (mg/kg, L). 2.meaning:
All water soluble mercury compound are poison. the pollution of drinking
water or food pollution, can cause a harm to human body. Because the mercury
compound has decreased in the short term to make melanin, skin whitening,
thinner, pore spot acne subside, and other functions, which by some companies
illegally added to cosmetics, and add the amount of usually is larger. 3.Equipment
disposition: Test paper 30 piece, contrast color 1 piece. 10
ml tube and sampling scoop of each one. 4.The
sample processing 4.1
Colorless liquid: direct detection 4.2
Solid or semisolid samples: Take shredded solid or semisolid
samples 1 g or 2.5 g or 5 g in the test tube, add water to 10 ml, fully
vibration wave, placed more than 10 minutes. 5.Testing
steps 5.1 Take 1 the test paper, inserted
into the process of liquid in 1 cm deep, 3 seconds, remove and place for 3
minutes, the spots on the test paper and contrast color comparison, find out
the same or similar levels. 5.2 if the sample is not diluted,
levels next to mark the value is the amount of mercury in the sample mg/L. 5.3 if the sample dilution, record
levels next to mark number, multiplied by the sample dilution multiple,
namely the mercury content in sample mg/kg. (sampling quantity 1 times 10,
sampling volume 2.5 g times 4, sampling amount of 5 g multiplied by 2). 6
explain 6.1 this method is detection of
mercury ion. Medical yellow mercuric oxide ointment content reached 2%, can
be directly react with test paper generating deep orange. 6.2 to facilitate the contrast
observation, can use pure water as a blank control. 6.3 this method is an on-site rapid
detection method, accurate quantitative the government standard shall
prevail. 6.4 Mercury in drinking water by the
standard of set limit to 0.001 mg/L or less. 6.5 Mercury in cosmetics standard of
set limit to 1 mg/kg or less. 6.6 limited index of the mercury in
food in Hg, basic are below 0.3 mg/Kg. 6.7 test paper shelf life two years,
the production date see packaging. Beijing
ShiAn XunDa technology co., Ltd. Telephone:010-87703877 www.bjsaxd.com
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