CN201885976U - 一种快速检测鲜奶中含硫化物的试纸 - Google Patents
一种快速检测鲜奶中含硫化物的试纸 Download PDFInfo
- Publication number
- CN201885976U CN201885976U CN2010206213738U CN201020621373U CN201885976U CN 201885976 U CN201885976 U CN 201885976U CN 2010206213738 U CN2010206213738 U CN 2010206213738U CN 201020621373 U CN201020621373 U CN 201020621373U CN 201885976 U CN201885976 U CN 201885976U
- Authority
- CN
- China
- Prior art keywords
- test paper
- fresh milk
- bracket plate
- handle
- sulfur compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
本实用新型提供的一种快速检测鲜奶中含有硫化物的试纸，在圆形托板上安装手柄；托板上附着着试纸；组装时将托板的一端插入手柄的夹层中固定，使用时在托板的两面粘贴试纸直接插入牛奶中，润湿后取出，刮掉试纸上粘的鲜奶，观察颜色，呈灰色或黑色为阳性反应，即判定样品中含硫化物。该试纸重复测定8-10次即更换新的，有效保藏期为80-90天。该产品的手柄2与托板1可一次性加工成型，制作材料由木制、塑料及其他硬质材料构成。
Description
技术领域
本实用新型涉及畜产品质量安全检测，特别针对牛奶掺假的检测，在无检测设备条件下，采用该试纸能检测出鲜奶中硫化物的存在，具有重要的实用价值。
背景技术
牛乳营养丰富，富含多种人体所需的氨基酸及丰富的矿物质、蛋白质、脂肪、维生素等营养素，且易被消化吸收、物美价廉、食用方便，是生命最好的营养源，是自然界赐予我们的最理想天然食品之一。随着消费者对乳及乳制品需求量的逐年上升，为了牟取暴利，一些不法商贩，向牛乳中掺杂使假，这种行为不仅严重影响了鲜奶的品质，也极大地损害了广大消费者的切身利益和身体健康，同时也严重影响了乳品企业的经济效益。
奶农和养殖场为了防止鲜奶中加水以后比重下降而达不到收购标准，因此，常加入一些盐类物质增加比重，以便达到收购标准增加收入、谋取暴利，硫化物就是其中的一种。本实用新型为了保障消费者的身体健康，必须对乳中的硫化物掺入进行严格的检测，开发的试纸研制，受到消费者的青睐，同时也为牛乳收购单位以质论价提供客观依据等。
发明内容
本实用新型目的在于：所提供的快速检测鲜奶质量的试纸，易于生产，结构简单，携带方便；检测掺有硫化物的鲜奶灵敏度极高，既安全又环保。
本实用新型的目的是这样实现的：一种快速检测鲜奶中含有硫化物的试纸盒，在圆形托板1上安装手柄2；托板1上附着着试纸3。
本实用新型的产品，反应原理是硫离子与铅离子反应：S2-+Pb2+→PbS↓生成灰黑色的硫化铅沉淀，故得知鲜奶中的硫化物的存在，操作简单，十分灵敏，由于检测的下限为6μg/ml，故成本低廉，试纸不仅适用于奶站，也适用于家庭的检测，具有较高的实用价值，彰显技术进步。
附图说明
下面将结合附图对本实用新型作进一步说明。
图1为本实用新型的俯视结构示意图；
图2为本实用新型的主视结构示意图；
如图1、图2所示，试纸-3、手柄-2、托板-1；组装时将托板1的一端插入手柄2的夹层内固定；使用时将试纸3附着于托板1的面上即可。
具体实施方式
实施例
该产品的圆形托板1上安装手柄2；托板1上附着着试纸3；组装时将托板1的一端插入手柄2的夹层中固定；使用时在托板1的一面或两面粘贴试纸3，直接插入牛奶中，润湿后取出，刮掉试纸上粘的鲜奶，观察颜色，呈灰色或黑色为阳性反应，即可判定样品中含硫化物质。
该产品的手柄2与托板1可一次性加工成型，制作材料由木制、塑料及其他硬质材料构成。
试纸的制备及结果分析：
1、乙酸铅用量的确定
每个烧杯中加入不同量的乙酸铅试剂，再加入10ml95%乙醇、90ml去离子水，混匀，过滤，滤液中浸泡试纸（直径4cm），取出在暗处干燥，并按照上述试验方法进行检测。实验结果列于表1。
2、乙酸铅试纸浸泡时间确定
每个烧杯中加入10g乙酸铅试剂，再加入10ml95%乙醇、90ml蒸馏水，混匀，过滤，滤液中浸泡试纸（直径4cm），浸泡不同时间，取出在暗处干燥，并按照上述试验方法进行检测。实验结果列于表2。
3、硫化物检测下限的确定
按照上述确定的乙酸铅试纸做法，只改变硫化物在奶样中的浓度，试验结果列于表3。
4、试剂保存时间的确定
用当天制作的乙酸铅试纸，以及保存1个月、2个月、3个月的乙酸铅试纸，按照上述方法进行显色操作，重复测定10次，结果见表4。
综上所述，该试纸重复测定8-10次更换新的为宜。
Claims (2)
1.一种快速检测鲜奶中含有硫化物的试纸，其特征在于：在圆形托板（1）上安装手柄（2）；托板（1）上附着着试纸（3）。
2.根据权利要求1所述的试纸，其特征在于：托板（1）和手柄（2）由木制、塑料及其他硬质材料构成。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206213738U CN201885976U (zh) | 2010-11-24 | 2010-11-24 | 一种快速检测鲜奶中含硫化物的试纸 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206213738U CN201885976U (zh) | 2010-11-24 | 2010-11-24 | 一种快速检测鲜奶中含硫化物的试纸 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885976U true CN201885976U (zh) | 2011-06-29 |
Family
ID=44183521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206213738U Expired - Fee Related CN201885976U (zh) | 2010-11-24 | 2010-11-24 | 一种快速检测鲜奶中含硫化物的试纸 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201885976U (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735797A (zh) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | 一种中药材或中药饮片二氧化硫残留量限量的检测方法 |
-
2010
- 2010-11-24 CN CN2010206213738U patent/CN201885976U/zh not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735797A (zh) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | 一种中药材或中药饮片二氧化硫残留量限量的检测方法 |
| CN102735797B (zh) * | 2011-07-19 | 2016-01-06 | 成都中医药大学 | 一种中药材或中药饮片二氧化硫残留量限量的检测方法 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Boersma et al. | Temperature driven changes in the diet preference of omnivorous copepods: no more meat when it's hot? | |
| Pen et al. | Effects of Yucca schidigera and Quillaja saponaria extracts on in vitro ruminal fermentation and methane emission | |
| Trabue et al. | Emissions of greenhouse gases, ammonia, and hydrogen sulfide from pigs fed standard diets and diets supplemented with dried distillers grains with solubles | |
| Sun et al. | Latitudinal distribution of zooplankton communities in the Western Pacific along 160 E during summer 2014 | |
| Molano et al. | Fumaric acid supplements have no effect on methane emissions per unit of feed intake in wether lambs | |
| Brulé et al. | Modified batch anaerobic digestion assay for testing efficiencies of trace metal additives to enhance methane production of energy crops | |
| Rosato | Managing biogas plants: A practical guide | |
| CN201885976U (zh) | 一种快速检测鲜奶中含硫化物的试纸 | |
| Fang et al. | Freshwater fish–consumption relations with total hair mercury and selenium among women in Eastern China | |
| Ren et al. | Effects of tributyrin supplementation on ruminal microbial protein yield, fermentation characteristics and nutrients degradability in adult Small Tail ewes | |
| Wang et al. | Tracing the organic matter source of cage culture sediments based on stable carbon and nitrogen isotopes in Poyang Lake, China | |
| Bayne | Carbon and nitrogen relationships in the feeding and growth of the Pacific oyster, Crassostrea gigas (Thunberg) | |
| Koski et al. | Seasonal changes in food quantity and quality of the common North Sea copepods Temora longicornis and Pseudocalanus elongatus: a bioassay approach | |
| Barham et al. | Risk of adulteration in milk consumed at Shaheed Benazirabad District of Sindh | |
| Thanh et al. | Effect of potassium nitrate or urea as NPN source and levels of Mangosteen peel on in vitro gas and methane production using molasses, Operculina turpethum and Brachiaria mutica as substrate | |
| Min et al. | Condensed and hydrolyzable tannins for reducing methane and nitrous oxide emissions in dairy manure—A laboratory incubation study | |
| Koski et al. | Post-bloom feeding of Calanus finmarchicus copepodites: selection for autotrophic versus heterotrophic prey | |
| Galindo et al. | Effect of Tithonia diversifolia (Hemsl.) Gray (Giant Mexican Sunflower) on the population of rumen protozoa and methanogens under in vitro conditions | |
| Niu et al. | Effects of Caragana korshinskii tannin on fermentation, methane emission, community of methanogens, and metabolome of rumen in sheep | |
| Jin et al. | Effects of winter and spring housing on growth performance and blood metabolites of Pengbo semi-wool sheep in Tibet | |
| Gutseit et al. | Food quality for Daphnia in humic and clear water lakes | |
| Bulliyya et al. | Determination of iodine nutrition and community knowledge regarding iodine deficiency disorders in selected tribal blocks of Orissa, India | |
| Serra | Estimation of carbon footprint in dairy cattle farms of Southern Italy | |
| Lee et al. | Stable carbon and nitrogen isotope composition of co-existing herbivorous zooplankton species in an oligo-dystrophic lake (Shirakoma-ike, Japan) | |
| Kang et al. | Improving ruminal fermentation and nutrient digestibility in dairy steers by banana flower powder-pellet supplementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20151124 |