News Details
The residue of organophosphate flame retardant
2017-9-27 11:32:07
The residue of organophosphate flame retardant has many methods, and the content of organic phosphate ester is low. Traditional liquid-liquid extraction (LLE) has the advantages of reproducibility, but it has a low recovery rate for some of the polarizable organophosphates (such as TCEP, TMP), and it consumes a large amount of solvent, which is cumbersome and time-consuming.
In addition, TMP, TEP has a high volatility, and it is difficult to carry out quantitative analysis in the process of concentrated process loss. Although Bacaloni et al. optimized the conditions for rotary evaporation, TMP recovery was still low. At present, organic phosphate ester flame retardant residue detection using solid phase extraction (SPE), solid phase microextraction (SPME), membrane assisted solvent extraction (MASS), liquid - liquid microextraction (MILE), the dispersed liquid phase microextraction (DLLME) less dosage of solvent extraction technology, such as to reduce the dosage of solvent and concentration time.
However, these methods still have shortcomings. Rodriguez, such as study, due to large TEHP fat-soluble, easy to soluble organic adsorption, the SPE and SPME cannot effectively extract TEHP}} o Quintana 58 MASE extraction condition was optimized, such as the water soluble larger TCEP, the extraction rate is only 5%, relative standard deviation is larger, DLLME has short extraction time, sample weight and the advantages of less dosage of solvent, but to TCEP extraction recovery rate is still low.
The extraction of organophosphate in solid samples is usually carried out by the methods such as sova-extraction, accelerated solvent extraction (ASE), microwave assisted extraction (MAE) and ultrasonic assisted extraction (UAE). Due to the complex composition of environmental samples, there is still a large amount of humic acid, petroleum hydrocarbon and other organic pollutants that are still extracted after initial treatment, which need further purification treatment. At present, the main use of commercialization of SPE column, GPC column, silica gel column and alumina column for purification, however, substrate removal effect is not ideal, as part of the organic phosphate (such as TEHP, TMP, teb) recovery rate is low. Therefore, the method of residual separation and analysis of organic phosphate flame retardants in the environment needs to be studied.
For drinking water purification process, activated carbon filtration and slow soil filter on all sorts of organophosphate shows good removal capability, and ozone purification and multi-layer filter 0 of chlorinated PE, removing effect is limited.
Isopropylphenyl Phosphate(IPPP50)Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP50 This Product Is Compatible With Vinyl Chloride, Nitrocellulose, Synthetic Resin And Natural Resin, Etc. Because Of The Above Advantages, Reofos Series In Industrial Production Is Widely Used: PVC Film As Flame Retardant Plasticizer, Reofos Increase In The Amount Of Oxygen Index Increased, Enhanced Flame Retardant. In The Rubber Industry Can Be Used As Chloroprene Rubber And Rubber Flame Retardant Plasticizer; In Other Industries Can Be Used As Lubricants With Extreme Pressure Additives And Digestion Of Cellulose Paint, Resin, Phenol Resin And Other Flame Retardants.
Isopropylphenyl Phosphate, Flame Retardant IPPP50 Use Is Also Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Against Germany in a central area precipitation in organophosphate studies have shown that in the rain and snow detect 6 kinds of organic phosphate ester, the TCPP concentration up to 2 659 ng/L, urban precipitation organic phosphate concentration in three to four times higher than the forest region, extensive use of plastic products containing organic phosphate in the city and the city's traffic conditions in urban precipitation is the main reason for the high concentration organic phosphate.
Bacaloni examines the lazio region of Italy (2006-2007) such as volcanic lake organic phosphate concentration distribution, etc., and the results show that the small volcanic lake impacted by human activities the organic phosphate concentration in ng/L levels, but found no relationship of the organic phosphate concentration in surface water and groundwater, concluded that the region's organic phosphate pollution mainly comes from the atmospheric transmission of organic phosphate. In 2009, organic phosphate was also detected in river water and seawater sediments in Taiwan.
Ten years ago, the U.S. national institute of standards and technology (NIST), the scientists found that nano clay can be used as a very effective flame retardant additives, but because of when the fire broke out, nano clay can not effectively prevent the melting of the polyurethane ammonia ester and dripping, and melt sponge will be 300% of fire spread faster, so researchers have been looking for an alternative flame retardant material. "Sponges also produce a lot of safe smoke that harms people's health," said Jeff Gilman, director of research at the center for the study of flammable materials.
The researchers found that nanoparticles in the polymer, increased the viscosity of the material, poly imide resin in the fire is not easy to flow easily, so the final decision will be carbon nanofibers in the sponge. Carbon fiber can effectively prevent the sponge from falling and reducing the fire. Studies have shown that carbon fiber can maintain a thermal balance, forming a stable environment to stop the sponges from falling through the fire.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In addition, TMP, TEP has a high volatility, and it is difficult to carry out quantitative analysis in the process of concentrated process loss. Although Bacaloni et al. optimized the conditions for rotary evaporation, TMP recovery was still low. At present, organic phosphate ester flame retardant residue detection using solid phase extraction (SPE), solid phase microextraction (SPME), membrane assisted solvent extraction (MASS), liquid - liquid microextraction (MILE), the dispersed liquid phase microextraction (DLLME) less dosage of solvent extraction technology, such as to reduce the dosage of solvent and concentration time.
However, these methods still have shortcomings. Rodriguez, such as study, due to large TEHP fat-soluble, easy to soluble organic adsorption, the SPE and SPME cannot effectively extract TEHP}} o Quintana 58 MASE extraction condition was optimized, such as the water soluble larger TCEP, the extraction rate is only 5%, relative standard deviation is larger, DLLME has short extraction time, sample weight and the advantages of less dosage of solvent, but to TCEP extraction recovery rate is still low.
The extraction of organophosphate in solid samples is usually carried out by the methods such as sova-extraction, accelerated solvent extraction (ASE), microwave assisted extraction (MAE) and ultrasonic assisted extraction (UAE). Due to the complex composition of environmental samples, there is still a large amount of humic acid, petroleum hydrocarbon and other organic pollutants that are still extracted after initial treatment, which need further purification treatment. At present, the main use of commercialization of SPE column, GPC column, silica gel column and alumina column for purification, however, substrate removal effect is not ideal, as part of the organic phosphate (such as TEHP, TMP, teb) recovery rate is low. Therefore, the method of residual separation and analysis of organic phosphate flame retardants in the environment needs to be studied.
For drinking water purification process, activated carbon filtration and slow soil filter on all sorts of organophosphate shows good removal capability, and ozone purification and multi-layer filter 0 of chlorinated PE, removing effect is limited.
Isopropylphenyl Phosphate(IPPP50)Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP50 This Product Is Compatible With Vinyl Chloride, Nitrocellulose, Synthetic Resin And Natural Resin, Etc. Because Of The Above Advantages, Reofos Series In Industrial Production Is Widely Used: PVC Film As Flame Retardant Plasticizer, Reofos Increase In The Amount Of Oxygen Index Increased, Enhanced Flame Retardant. In The Rubber Industry Can Be Used As Chloroprene Rubber And Rubber Flame Retardant Plasticizer; In Other Industries Can Be Used As Lubricants With Extreme Pressure Additives And Digestion Of Cellulose Paint, Resin, Phenol Resin And Other Flame Retardants.
Isopropylphenyl Phosphate, Flame Retardant IPPP50 Use Is Also Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Against Germany in a central area precipitation in organophosphate studies have shown that in the rain and snow detect 6 kinds of organic phosphate ester, the TCPP concentration up to 2 659 ng/L, urban precipitation organic phosphate concentration in three to four times higher than the forest region, extensive use of plastic products containing organic phosphate in the city and the city's traffic conditions in urban precipitation is the main reason for the high concentration organic phosphate.
Bacaloni examines the lazio region of Italy (2006-2007) such as volcanic lake organic phosphate concentration distribution, etc., and the results show that the small volcanic lake impacted by human activities the organic phosphate concentration in ng/L levels, but found no relationship of the organic phosphate concentration in surface water and groundwater, concluded that the region's organic phosphate pollution mainly comes from the atmospheric transmission of organic phosphate. In 2009, organic phosphate was also detected in river water and seawater sediments in Taiwan.
Ten years ago, the U.S. national institute of standards and technology (NIST), the scientists found that nano clay can be used as a very effective flame retardant additives, but because of when the fire broke out, nano clay can not effectively prevent the melting of the polyurethane ammonia ester and dripping, and melt sponge will be 300% of fire spread faster, so researchers have been looking for an alternative flame retardant material. "Sponges also produce a lot of safe smoke that harms people's health," said Jeff Gilman, director of research at the center for the study of flammable materials.
The researchers found that nanoparticles in the polymer, increased the viscosity of the material, poly imide resin in the fire is not easy to flow easily, so the final decision will be carbon nanofibers in the sponge. Carbon fiber can effectively prevent the sponge from falling and reducing the fire. Studies have shown that carbon fiber can maintain a thermal balance, forming a stable environment to stop the sponges from falling through the fire.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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