High precision soil heavy metal dedicated detector

Brand: Tengyuyi^®

model:TY-J20

Soil, fertilizers, food, and water quality are gradually polluted by industrial waste gas, wastewater, and waste residue. Some people even directly use industrial wastewater to irrigate crops, causing a large accumulation of heavy metals such as cadmium, lead, arsenic, chromium, mercury, nickel, iron, aluminum, zinc, manganese, and copper in the soil tillage layer, especially in urban suburbs where the phenomenon is more serious; In addition, the extensive use of inorganic chemical pesticides has led to serious exceedance of heavy metal content in vegetables and fish, continuously accumulating in the human body, resulting in chronic heavy metal poisoning among consumers. There have been multiple incidents of collective heavy metal poisoning in China, which have attracted high attention from the government and various sectors of society. However, the current heavy metal determination methods have slow determination speed, complicated steps, and expensive instruments. Based on this situation, we have developed a rapid determination method for heavy metals, which can be used for rapid combined determination of lead, arsenic, chromium, cadmium, mercury, etc. in samples such as vegetables, food, soil, organic fertilizers, and tobacco leaves.
1、 Detection principle:
（1） After digestion of the sample, all forms of heavy metals (including arsenic, lead, cadmium, chromium, mercury, nickel, iron, aluminum, zinc, manganese, copper, etc.) are converted into ionic forms. After adding relevant detection reagents, the color develops. Within a certain concentration range, the depth of the solution color is proportional to the content of heavy metals, following the Lambert Beer law. The content value is then measured by instruments and compared with the national standard for the safety and quality of agricultural products and the allowable limit for pollution-free vegetable safety requirements to determine the content of heavy metals in vegetable samples.
（2） Detection principles and standards for various heavy metals
1. The detection principle and adopted standards of heavy metal arsenic
Adopting the national standard (GB/T50091.1-2003) borohydride reduction colorimetric method, the sample is digested, potassium iodide thiourea is added and heated to reduce pentavalent arsenic to trivalent arsenic. Under acidic conditions, potassium borohydride reduces trivalent arsenic to negative trivalent, forming arsine, which is introduced into the absorption solution and appears yellow. The arsenic content is detected by the instrument.
2. The detection principle and adopted standards of heavy metal lead
The national standard (GB/T5009.12-2003) dithizone colorimetric method is adopted, which means that after digestion of the sample, under weakly alkaline conditions, lead ions form a red complex with dithizone, dissolve in chloroform, and perform colorimetric determination.
3. The detection principle and adopted standards of heavy metal chromium
After digestion of the sample, in the presence of divalent manganese, chromium ions react with diphenylcarbazide to form a purple red complex. The color of the complex is directly proportional to the hexavalent chromium content, and the chromium content can be determined by colorimetric analysis.
4. The detection principle and adopted standards of heavy metal cadmium
Using the national standard (GB/T5009.15-2003) colorimetric method, after digestion of the sample, under alkaline conditions, cadmium ions react with 6-bromophenylthiazolylazo naphthol to form a red complex, which is dissolved in chloroform for colorimetric determination.
5. The detection principle and adopted standards of heavy metal mercury
The national standard (GB/T5009.17-2003) dithizone colorimetric method is adopted, which means that after digestion of the sample, under acidic conditions, mercury ions form an orange red complex with dithizone, dissolve in chloroform, and perform colorimetric determination.

Instrument features:

★Microcomputer control, programmed design,5.1Large screen Chinese characters backlit display, AC/DC dual-use, built-in lithium battery,Can be tested for field mobility.

★ No need for blank and standard calibration, one click operation, direct data reading, complete set of accessories and finished drugs.

★Using high brightnessLEDLight source, filter processing technology to ensure stable wavelength of the light source,Silicon semiconductors, as signal receiving systems, have a long lifespan10Ten thousand hour level. The light source is stable, with good reproducibility and high accuracy.
★The colorimetric groove adopts a single channel four light path designThere is no mechanical displacement or wear, and the optical path testing is well positioned to ensure the accuracy of the measurement results.

★ Can detect soilFertilizerCropsHeavy metals and trace elements in food.

★Touch sensitive buttons, one click direct reading, built-in thermal printer, capable of printing test results.

1、 Test project:

Soil:Soil lead, soil arsenic, soil cadmium, soil chromium, soil mercury, soil nickel, soil aluminum, soil titanium, soil fluoride, soil seleniumCalcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, molybdenum;

Fertilizer:Fertilizer lead, fertilizer arsenic, fertilizer cadmium, fertilizer chromium, fertilizer mercury;

Food:Lead, arsenic, cadmium, chromium, mercury, copper, nickel, fluorine, aluminum, formaldehyde, sulfur dioxide, suspended white particles, pesticide residues, nitrate, nitrite.

2、 Instrument technical specifications:

1.Power supply: AC220±22Vdirect-current7~9V（The instrument is equipped with a built-in lithium battery）

2.Repetitive error: ≤0.02%（0.0002Potassium dichromate solution

3.Linear error: ≤0.1%（0.001，Copper sulfate detection

4.Sensitivity: Red light ≥4.5×10^-5Blue light ≥3.17×10^-3Green light ≥2.35×10^-3Orange light ≥2.13×10^-3

5.Wavelength range: Red light:680±2nm；Blue light:420±2nm；Green light:510±2nmOrange light:590±4nm

6.Lead, chromium, cadmium, mercury, arsenic in soilSimultaneous digestion and determination of multiple heavy metals at once.

7.In fertilizersLead, chromium, cadmium, mercury, arsenicSimultaneous digestion and determination of multiple heavy metals at once.

8.The instrument does not require blank and standard settings, and the sample is placed and read directly to reduce errors caused by user calibration and ensure accurate test results.

9.5.1cunLarge screen Chinese characters backlit displayAutomatically store print detection results, can be stored1000The above test results have the function of querying and printing historical data.

10.Data printing: Equipped with a built-in thermal printer, it can print out test dates, test times, types, test items, test values, etc.

3、 Test speed:

Testing soil samples for individual heavy metals≤30Minutes, simultaneous detection5Heavy metals（Lead, chromium, cadmium, mercury, arsenic）≤ 50 hours；

Testing fertilizersSample（Lead, chromium, cadmium, mercury, arsenic）≤50Minutes, simultaneous detection5A soil sample（N、P、K）≤ 2 hours.

4Product Instrument Features:

Full functionality: All testing items are available (various types of drugs can be selected).

Fully equipped: This instrument integrates medicine, equipment, and instruments, making it easy to carry and equivalent to a small laboratory. Suitable for agricultural environmental protection departments to evaluate soil and farmland pollution, as well as detect the content of organic fertilizers and heavy metals in food.

Easy to operate, no need for calibration, direct testing, fast speed, ready to use finished pharmaceuticals without the need for configuration.

VIConfiguration List(Two aluminum alloy boxes):

one Location: Zhengzhou Jinnong Technology Co., Ltd

electricity Words:(Same WeChat account)

QQ：1391559627(Business 1)2543987310(Business 2)183783709(Testing Technology)

E-mail:zzjnkj@163.com

net Address:www.zzjnkj.com，www.hnjnkj.com

grounds Address: Fengle Hardware and Electrical City, Jinshui District, Zhengzhou City28-1-12

Technical parameters of soil fertilizer analyzer (TY-J20)

Brand: Tengyuyi

model: TY-J20

Configuration List (Two Aluminum Alloy Boxes):

Instrument box: 1 mainframe (with built-in printer and lithium battery), 4 colorimetric dishes, 1 electronic balance (200g/0.01g), 1 power adapter, 1 graduated pipette 1, 2, 5, 10ml each, 1 graduated pipette holder, 1 suction ball, 1 small aluminum box, 1 set of instruction manual and certificate of conformity.

Drug box: 1 set of soil heavy metal determination reagents, 2 triangular bottles (100mL), 1 volumetric flask, 1 washing bottle, 1 set of sample spoons, 2 boxes of qualitative filter paper, 12 straws (3mL), 1 measuring cylinder (50mL), 30 reaction test tubes, and 1 test tube rack.