68 Articles found
Shimadzu Scientific Instruments Inc Articles
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Determination of Aromatic Hydrocarbons in Diesel Fuel by LC-RID According to ASTM D6591
The test method presented here is applicable to the determination of mono-, di-, and tri-plus aromatic hydrocarbon (MAH, DAH, and T+AH, respectively) content in diesel fuels and middle distillates with boiling points in the range of 150° to 400° C ...
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Perchlorate Quantitation in Drinking Water Using Suppressed Anion Chromatography Coupled with Single Quadrupole MS
The EPA has established a Lifetime Drinking Water Health Advisory of 15 ppb for perchlorate to reduce health risks. More than 10 states in U.S. have established heath advisory levels for perchlorate in drinking water ranging from 1 to 18 ppb; for ...
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A Guide to the Novel Shimadzu GC-MS BFB Tuning for the Analysis of Volatile Organic Compounds in Environmental Samples
The Environmental Protection Agency (EPA) establishes strict BFB tuning criteria to ensure the quality of the results when analyzing volatile compounds. Due to many challenges inherent to GC-MS Purge and Trap instruments required for this analysis, ...
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Determination of Haloacetic Acids in Drinking Water According to EPA Method 552.3 using Hydrogen Carrier Gas
Haloacetic acids (HAAs) are known carcinogens that may occur as disinfection byproducts in drinking water. Currently five HAAs are regulated under the Stage 2 Disinfectants and Disinfection Byproducts Rule (DBPR) and occurrence of four more HAAs is ...
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Shimadzu’s Next-Generation Top-Loading Balances Provide Ultra-Fast Response and Outstanding Reliability
The UP Series of top-loading balances from Shimadzu Scientific Instruments (SSI) provide the fastest response performance in their class. Advanced digital control technology enables the high-speed weighing capability of these top-loading balances ...
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Best Practices for Optimizing PFAS Analysis
Per- and polyfluoroalkyl substances (PFAS) are currently of great public health and environmental concern. Because PFAS are ubiquitous and commonly used in materials routinely employed for chemical analysis, laboratories are in need of streamlined ...
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Analysis of Aroclor and Organochlorine Pesticides in Ground Water using Triple Quadrupole GC-MS/MS
USEPA method 608 is a GC-ECD method to determine Aroclor and organochlorine pesticides. This method requires the use of second column for confirming the detected compounds due to the low selectivity of the ECD detector compared with GC-MS/MS. Also ...
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Analysis of Microplastics Collected from Marine Species Using an Infrared Microscope
Pollution by marine debris including microplastics has become a serious environmental problem, and scientists all over the world are exploring its status by carrying out a survey on microplastics accumulated in marine species. The effects of ...
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Ultra-fast LC-MS/MS Analysis of PFAS in Environmental Samples
There is increasing concern about the persistence and effects of Per- and Polyfluorinated Alkyl Substances (PFAS) in the environment. This white paper summarizes the state-of-the-art analytical methods for monitoring PFAS and demonstrates the use, ...
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Microplastic Analysis Using the AIM-9000 Infrared Microscope
Microplastics are minute pieces of plastic with diameters ranging from a few micrometers to a couple of millimeters. Microplastics have become a global environmental issue since they may adversely affect coastal and marine ecosystems and potentially ...
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Analysis of PFAS Specified in EPA Method 537 and Beyond using Shimadzu UFMS
This application note demonstrates the use, performance, and compatibility of Shimadzu ultra-fast mass spectrometry for EPA Method 537 with an expanded compound panel of seven additional PFAS. A total of 27 PFAS were extracted, separated and ...
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Improved Analysis of Polyfluorinated Alkyl Substances (PFAS) in Environmental Samples Using Optimized ASTM Method 7968/7979
There has been an increasing awareness of the presence of polyfluorinated alkyl substances (PFAS) in water. A simple and robust method with quick turn-around time to determine these compounds is essential to providing accurate responses in a ...
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TOC and TN Measurements of Seawater
For pollution control of the ocean and in the research of the ocean environment, the measurement of total organic carbon (TOC) is regarded as an important index of organic contaminants contained in seawater. At the same time, the measurement of ...
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Determination of Organochlorine Pesticides and Polychlorinated Biphenyls Using GC/MS/MS Operated in the MRM Mode
This paper describes use of a triple quadrupole GC/MS/MS method using Multiple Reaction Monitoring (MRM) mode for sensitive and selective detection and quantitation of Organochlorine pesticides and PCBs. A database with optimized MRM transitions for ...
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Introducing a New ASTM Method for the Determination of Total Nitrogen, and TKN by Calculation, in Water Samples
The USEPA Clean Water Act (CWA) requires national approval for all methods used for CWA compliance. There are approved methods for the determination of inorganic nitrogen (NO3-N, NO2-N, and NH3-N), and for organic nitrogen (TKN – NH3-N)2. ...
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Nitrate Analysis of Water Samples Using a Benchtop UV-Vis Spectrophotometer
Nitrogen is naturally found in groundwater and surface water in the form of nitrate, nitrite, or ammonium. The EPA has established a maximum contaminant level of nitrate-nitrogen in potable water of 10ppm. This application presents results of UV-Vis ...
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Determination of Selected ASTM Perfluorinated Compounds (PFCs) Using LC-MS/MS
ASTM methods D7968-14 and D7979-15 are used to determine the same list of PFCs but in different matrices. ASTM method D7968-14 lists soil as a matrix while ASTM method 7979-15 lists water, sludge, influent, effluent and waste water as matrix ...
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Analysis of Trace Elements in Water by EPA Method 200.8 using ICP Mass Spectrometry
This application note describes the methodology and use of the Shimadzu ICPMS-2030 ICP mass spectrometer for the analysis of trace elements in drinking and fresh waters following the EPA 200.8 method. This method is also used for analysis of ...
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TOC Analysis for Standard Methods 5310B: High-Temperature Combustion Method
Introduction Total Organic Carbon (TOC) is a rapid method that analyzes for organic carbon and expresses the result as the amount of carbon found. It is a non-specific method unable to distinguish between various organic species and only indicates ...
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Fast, Sensitive, and Cost-effective ICPE Spectrometry Analysis of Trace Metals in Water by EPA Method 200.7
Introduction The Shimadzu ICPE-9820 multi-type ICP atomic emission spectrometer is the ideal instrument for running EPA Method 200.7. The ICPE-9820 permits simultaneous analysis of all elements, at all wavelengths, allowing high-throughput analysis ...
