Nuts can generally be divided into two types: one is seeds, such as sunflower seeds, pumpkin seeds, peanuts, etc.; the other is tree nuts, such as pistachios, hazelnuts, cashews, walnuts, pine nuts, walnuts, chestnuts, almonds. And the macadamia and pecans that have been very hot in the past two years. These nut foods contain more protein, calcium and a variety of vitamins, which can provide the body with a variety of nutrients needed by the brain and body. Nuts Food,Fried Food,Fried Broad Bean,Nuts And Fried Food Hangzhou Aiyomi food co.,LTD , https://www.aiyomisnacks.com
The plasticizer in liquor products may belong to a specific migration, which may be mainly caused by production, transportation and packaging, such as plastic wine barrels, plastic wine pipes, wine pumps, latex bottles, finished wine plastic bottles, finished wine plastic barrels. Packaging, etc. 
We often say that phthalates are a class of relatively similar compounds. In June 2011, the Chinese Ministry of Health listed 17 phthalates as "non-edible substances that may be illegally added in food." And a list of easily abused food additives (sixth batch), as follows:
Di(2-ethylhexyl) phthalate (DEHP),
Diisodecyl phthalate (DINP),
Diphenyl phthalate (DPP),
Dimethyl phthalate (DMP),
Diethyl phthalate (DEP),
Dibutyl phthalate (DBP),
Dipentyl phthalate (DPP),
Dihexyl phthalate (DHXP),
Didecyl phthalate (DNP),
Diisobutyl phthalate (DIBP),
Dicyclohexyl phthalate (DCHP),
Di-n-octyl phthalate (DNOP),
Butyl benzyl phthalate (BBP),
Di(2-methoxy)ethyl phthalate (DMEP),
Di(2-ethoxy)ethyl phthalate (DEEP),
Di(2-butoxy)ethyl phthalate (DBEP),
Di(4-methyl-2-pentyl) phthalate (BMPP)
This method introduces two methods based on Waters Ultra Performance Liquid Chromatography (UPLC ® technology) for the analysis of 18 kinds of phthalates (including Taiwan's FDA requirements). The first method is to use Waters ultra-high performance liquid. Chromatography-mass spectrometry (UPLC/MS/MS), which has the characteristics of fast analysis and high sensitivity. Suitable for users who have a mass spectrometry system in the laboratory and pursue detection sensitivity. The second method is the Waters Ultra Performance Liquid Chromatography System and Diode Array Detector (UPLC/PDA) analysis method, which is suitable for users who do not yet have a mass spectrometry system. 
Injection volume: 10uL 
Analysis results of 18 phthalates (concentration: 10ppb) (DMP, DMEP, DEEP, DEP, DPhP, DEHP, BBP, DIBP, DBP, DBEP, DPP, DCHP, BMPP, DHXP, DNOP, DINP, DNP, DIDP) 
A. UPLC/PDA condition 
About Waters ACQUITY UPLC H-Class
In general, a nut is a closed fruit classification of a nutrient-covered woody or leathery hard shell. The skin is hard and contains one or more seeds. It includes two types of tree nuts and fruit seeds, walnuts, chestnuts, pistachios, almonds, etc., which belong to the fruit seed class.
At present, many liquors have been exposed to serious plasticizers. The China Liquor Industry Association has stated that liquor products basically contain plasticizer components. The Chinese liquor standard is studying the standardization of plasticizer content of liquor products, and requires the health department to conduct liquor. Plasticizer residue safety risk assessment.
Waters also has a professional solution for the detection of plasticizers in the current wines. The webinar will be held at 10:00 on December 4, 2012, " Waters Analytical Solutions for Plasticizers in Liquor ". You can participate in the seminar for free with a computer connected to the network. Click here to register for free .
GB9685-2008 specified food containers, packaging materials using the original additive
Sample Purification Method ' Waters Phthalate Pretreatment Solution ' can be downloaded from the Waters official website:
[Method 1: UPLC/MS/MS method]
Experimental conditions A. UPLC condition
LC System: ACQUITY ® UPLC H-Class
Column: ACQUITY UPLC HSS C 18 , 1.7um, 2.1X100mm,
Mobile phase A: 0.1% aqueous FA solution
Mobile phase B: acetonitrile
Flow rate: 0.4ml/min
Gradient elution: gradient table
Column temperature: 35 ° C,
Sample temperature: 10 ° C
Strong wash solvent: ACN
Weak solvent: H 2 O : ACN = 95:5
Running time: 7.5 minutes
B. MS conditions:
System: ACQUITY UPLC TQD
Ionization mode: ESI+
Ionization voltage: 3.2KV
Ion source temperature: 120 ° C
Desolvation gas temperature: 400 ° C
Desolvent gas flow: 650L/Hr
Part of the MRM channel:
[Method 2: UPLC/PDA method]
Instrument System: Waters UPLC H-Class/PDA
Column: ACQUITY UPLC HSS C 18 (1.7um, 2.1×100mm)
Wavelength: 225nm,
Column temperature: 45 ° C,
Flow rate: 0.4mL/min
Mobile phase: A-water, B-acetonitrile, gradient elution
The chromatographic results of 18 phthalates are shown in the figure below:
HPLC method of operation, UPLC's superior performance
If you are doing routine analysis, or method development, or just prefer the flexible use of multiple solvents in a quaternary pump system, and are eager to achieve the fast, high sensitivity, high resolution performance of UPLC technology, then Waters Corporation The ACQUITY UPLC H-Class system is your only choice now. The ACQUITY UPLC H-Class System is an advanced, optimized system with the flexibility and simplicity of quaternary solvent mixing and a flow-through injector for advanced UPLC separation – high resolution, Sensitivity and high throughput while maintaining the proven durability and reliability of the ACQUITY system.
With the ACQUITY UPLC H-Class, you can continue to run existing HPLC methods on future-oriented LC platforms and seamlessly transition to UPLC separations. Once you're ready, you can use integrated system tools and a reliable column toolkit for method conversion and method development to streamline the transition process.
Features:
Multi mixed solvent: QSM four solvents can be mixed in any combination or proportion. Extend the optional solvent to up to nine with the optional internal solvent selection valve for a more flexible approach.
Direct injection Sampling: SM-FTN needle inflow path using a special technique, under high pressure to ensure accurate sealing the syringe, the injection can be achieved with high accuracy, with excellent sample recovery.
Next chromatographic column oven: Our new UPLC column heater and heat pipe manager has been standardized, with easy operation, small size active preheater, so that the same efficiency between systems, pre-column The heat exchanger guarantees stable thermal performance; the column manager offers multi-zone flexibility with a temperature range of 4 to 90 ° C and can be used in combination.
A controlled volume of retentate: ACQUITY UPLC H-Class's SmartStart technology (patent pending) can simultaneously start time and the gradient of each pre-injection step is automatically managed. By superimposing these typical continuous processes, the cycle time can be minimized.
About Waters ACQUITY UPLC TQD
The Waters TQ Detector is an instrument developed for the integrated UPLC/MS/MS quantitative analysis to achieve the best selective stability, stability, speed and accuracy of tandem quadrupole MS. To match the ultra-high performance of UltraPerformance LC ® (UPLC), the TQ detector collects data as fast as possible. Used in conjunction with the ACQUITY UPLC System, the ACQUITY TQD system provides leading analytical analysis limits and sample throughput for all user quantitative analysis, including: bioanalysis, ADME screening, food safety, environmental monitoring, clinical, forensics, etc. .
Features:
• Automated system check, user interface is simple and friendly, easy to use, optimized MS/MS detection to meet the most demanding quantitative analysis needs
• Fast data collection and accurate and reproducible chromatographic peak area measurement
• Reliable and durable ZSprayTM atmospheric pressure ion source, various ion source modes such as ESI, APCI, ESCi, APPI, ASAP, etc.
• Industry-leading multi-mode detection capability for simultaneous multi-mode acquisition in one run
• Automated instrument optimization and quantitative method development tools, sophisticated application software toolkits for user-specific analysis requirements
• rapid data acquisition ability (using the T-Wave TM collision cell, multi-mode ionization, polarity rapid conversion technology)