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Tổng tiền thanh toán:
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Sản phẩm hồ sơ. :
The TP20-GC solution has the following advantages:
1. Short sample preparation time: 20 minutes/sample preparation time fully meets the needs of enterprise users for rapid screening;
2. does not produce waste gas waste liquid: this does not require reagents, no pre-treatment, no waste gas waste liquid;
3. direct injection, no pre-treatment: direct solid or liquid injection, no pre-treatment;
4. built-in standard curve: more intuitive to determine whether the material is too high in the benzene (exclusive technology);
5. no need for a professional laboratory environment: only need ordinary operating space with air conditioning power supply can be installed and used.
Giới thiệu sản phẩm chi tiết:
I.Environmental protection directives
1.RoHS / ELV directive six restricted substances testing standard test
EU Directive 2002/95 / EC (RoHS Directive) on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment, requires that from July 1, 2006, member states should ensure that And electrical equipment restrict the use of six harmful substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers.
2.RoHS 2.0 Directive
On June 4, 2015, the European Union issued a directive (EU) in its official gazette 2015/863 to amend RoHS2.0 (2011/65 / EU) Appendix II, and officially revised the four phthalates (DEHP, BBP, DBP, DIBP) are listed in Appendix II of RoHS2.0. As of December 31, 2016, EU member states must translate this directive into national regulations and implement them. The limits of the four new phthalates are all 0.1% (1000 ppm). The difference from the four priority evaluation substances proposed earlier is the deletion of hexabromocyclododecane (HBCDD) and the addition of DIBP as Regulated substances.
3.American CPSIA (H.R. 4040) standard
All toys or childcare products: DEHP, DBP, BBP ≤ 0.1%; all toys or childcare products suitable for children under 3 years of age and can be placed in the mouth: DEHP, DBP, BBP, DINP, DIDP, DNOP ≤ 0.1%
II、The corresponding instrument and equipment for RoHS 2.0 testing：
1.Product name, specifications, quantity, amount, including standard accessories
RoHS2.0 controls four o-benzene compounds
TP20-GC Micro-cracking desorption of benzene rapid screening solution
This TP2-GC system can do 16 kinds of o-benzene detection to meet the requirements of o-benzene detection. In addition to making o-benzene, this system can also be used as red phosphorus flame retardant, organic solvent residue, polymer material, and volatilization in materials. Sexual organics, etc., powerful!
Part I: Introduction to TP20-GC ROHS2.0 O-Benzyl Solution
The TP20-GC solution has the following advantages:
1. Short sample preparation time: 20 minutes/sample preparation time fully meets the needs of enterprise users for rapid screening;
2. does not produce waste gas waste liquid: this does not require reagents, no pre-treatment, no waste gas waste liquid;
3. direct injection, no pre-treatment: direct solid or liquid injection, no pre-treatment;
4. built-in standard curve: more intuitive to determine whether the material is too high in the benzene (exclusive technology);
5. no need for a professional laboratory environment: only need ordinary operating space with air conditioning power supply can be installed and used.
Part II: Comparative Analysis of Three Solutions for RoHS2.0
Part III: Instrument Accuracy and Reliability Test:
Experimental part: instruments and consumables
1. Gas chromatograph with dual EPC control;
2. TP20-GC thermal desorption desorber (cracking desorption temperature 200 ° C -650 ° C);
3. Chromatography workstation (with anti-control function);
4. special capillary ortho-benzene special column;
5. Nitrogen and hydrogen air source;
6. one ten thousandth of a balance;
Pre-processing:
The method does not require pre-treatment, the consumable is 2.5cm long quartz tube, quartz cotton, pretreatment column, the solid sample is placed in the middle part of the quartz tube, the two ends are fixed with quartz cotton, and then the prepared sample tube is placed in the heating chamber Just fine.
Analysis condition
Micro-pyrolysis program temperature rise 200 ° C -450 ° C
Microthermal cracking time 2 min
Injection method: split injection
Liquid injection volume: 1 ul
Solid injection volume: 5mg or less
Inlet temperature: 250 °C
FID detector temperature: 300 °C
Temperature programmed to 50 °C (for 1 min), to 20 °C per minute to 450 °C (for 4 min)
Component name and retention time
Results and discussion:
Standard curve and linear range (detection limit)
The DIBP standard solutions were prepared at concentrations of 50 ppm, 100 ppm, 250 ppm, 500 ppm, and 1000 ppm. The concentration was plotted on the abscissa and the peak area of the component was plotted on the ordinate. The standard curve was drawn. The standard curve and the linear correlation coefficient are shown below.
The table below compares the peak height and peak area of five different concentration
3 times signal to noise ratio calculation of the minimum detection limit of each component is 25ppm
Repeatability (precision experiment)
The repeatability was measured at the concentration of the minimum detection limit, and the results are shown below.
Conclusion: The rapid detection method for ortho-benzene in Rohs2.0 has a minimum detection limit of 25 ppm (the lowest detection limit of Shimadzu PY+GCMS is 50ppm), the linear correlation coefficient is greater than 0.998, and RSD%=8.24, which is fully satisfied. Enterprise material screening requirements.
The fourth part meets the requirements of IEC62321-8