governmentchemist


REACH Annex updated for PAH method by Nick Boley
March 3, 2015, 10:03
Filed under: Uncategorized

We reported last year that the European Commission had notified the World Trade Organisation of its intention to amend REACH Annex XVII to update the method to be used for determining Benzo(a)pyrene at a maximum level of 1 mg/kg and all 8 notified polyaromatic hydrocarbons (PAHs) at a maximum level of 10 mg/kg for the sum of these, in tyre extender oils.

The new method, EN 16143:2013, is specific to the measurement of these PAHs, whereas the previous method was not appropriate.

The full details are given in  Commission Regulation 2015/326.

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Guidance for Forensic Laboratories to avoid DNA Contamination – Consultation by Nick Boley
January 15, 2015, 10:14
Filed under: Uncategorized | Tags:

The UK Forensic Science Regulator (FSR) has published a consultation on a guidance document for forensic laboratories handling DNA samples within the Criminal Justice system.

The document amplifies the requirements of ISO/IEC 17025 – under which all forensic laboratories must be accredited – to give guidance on how laboratories should be designed, set up and operated to avoid and control potential contamination. This is a very comprehensive document which covers physical and personnel matters, and should enable forensic laboratories to avoid the type of contamination which can cause evidence to become unsafe.

Views are sought from stakeholders on this document via this link.



New CEN Publications: October 2014 by Nick Boley
November 5, 2014, 15:38
Filed under: Uncategorized | Tags:

The following list shows standards and technical documents published by the European Standardisation Organisation, CEN, during October 2014, some of which are relevant to chemical measurement in support of regulation.

EN 71-3:2013 + A1:2014 – Safety of toys – Part 3: Migration of certain elements, covering  requirements and test methods for the migration of aluminium, antimony, arsenic, barium, boron, cadmium, chromium (III), chromium (VI), cobalt, copper, lead, manganese, mercury, nickel, selenium, strontium, tin, organic tin and zinc from toy materials and from parts of toys.

CEN ISO/TS 29843-2:2014 – Soil quality: Determination of soil microbial diversity – Part 2: Method by phospholipid fatty acid analysis (PLFA) using the simple PLFA extraction method.

CEN/TS 16707:2014 – Foodstuffs:  Methods of analysis for the detection of genetically modified organisms and derived products – Polymerase chain reaction (PCR) based screening strategies.

EN 13805:2014 – Foodstuffs: Determination of trace elements – Pressure digestion.

EN 15376:2014 – Automotive fuels: Ethanol as a blending component for petrol – Requirements and test methods

EN 16424:2014 – Characterization of waste: Screening methods for the element composition by portable X-ray fluorescence instruments

EN ISO 12228-2:2014 – Determination of individual and total sterols contents – Gas chromatographic method – Part 2: Olive and olive pomace oils (ISO 12228-2:2014)

EN ISO 16960:2014 – Natural gas: Determination of sulfur compounds – Determination of total sulfur by oxidative microcoulometry method (ISO 16960:2014

EN 1601:2014/AC:2014 – Liquid petroleum products: Unleaded petrol – Determination of organic oxygenate compounds and total organically bound oxygen content by gas chromatography (O-FID)

CEN ISO/TS 29843-1:2014 – Soil quality: Determination of soil microbial diversity – Part 1: Method by phospholipid fatty acid analysis (PLFA) and phospholipid ether lipids (PLEL) analysis (ISO/TS 29843-1:2010).



New report on PBDE in water measurement published by Nick Boley
September 3, 2014, 15:41
Filed under: Uncategorized

A new report on the development of new measurement methods for the determination of polybrominated diphenyethers (PBDEs) in waters has been published by the Government Chemist on the GC pages of the gov.uk website.

The report, submitted as an MSc thesis by Loughborough University student Babarinde Olukayode Adedayo, was written following a 4 month placement at LGC’s Teddington laboratories, which was supported by the Government Chemist Advisory Function.

The work carried out highlights a method based upon semi-exact matching double isotope dilution mass spectrometry (SEMDIDMS) following liquid-liquid extraction as a pre-concentration step. The objective of the work was to develop a method capable of measuring PBDEs, which are highly toxic, bioaccumulative and persistent chemicals previously used as flame retardants, with limits of quantification (LOQs) below the limit values stated in the Quality Standards Directive (QSD) of the Water Framework Directive. The limit values of 0.5 ng/L are particularly challenging, and cover the sum of the 6 PBDEs BDE-28, BDE-47, BDE-99, BDE-100, BDE-153 and BDE-154, which are the six PBDEs which are most likely to be found.

 

 



Amendment to Sulphur in Liquid Fuels Regulations published by Nick Boley

The UK Government has published the Sulphur Content of Liquid Fuels (England and Wales) (Amendment) Regulations 2014 (SI 1975/2014), which amends the Sulphur Content of Liquid Fuels (England and Wales) Regulations 2007 (SI 79/2007).

This amendment, which had previously been enacted in Northern Ireland by the Sulphur Content of Liquid Fuels (Amendment) Regulations (Northern Ireland) 2014 (SR 147), restricts the sulphur content of heavy fuel oils to 1 % by mass, and the sulphur content of gas oils to 0.1 % by mass. It also deletes the previous schedule 8 “technical requirements for sample analysis”. Schedule 6 is amended as follows: “The reference method adopted for determining the sulphur content of fuels sampled pursuant to paragraph (1) shall be defined by ISO method 8754 (2003) or EN ISO 14596 (2007).”

ISO 8754:2003 covers the determination of the sulphur content of fuels by energy-dispersive x-ray fluorescence spectrometry, and has a working range of 0.03 % to 5% sulphur by mass.

EN ISO 14596:2007  covers the determination of the sulphur content of fuels and fuel additives by wavelength-dispersive X-ray fluorescence spectrometry and has a working range of 0.001 % to 2.5 % sulphur by mass.



SCCS Opinions on 4 chemicals published by Nick Boley
July 16, 2014, 07:51
Filed under: chemicals, Cosmetics, EU Information, Uncategorized | Tags:

The European Commission’s Scientific Committee on Consumer Safety (SCCS) has recently published four opinions relating to cosmetic and hair dye products. The products, and the opinions on them, are as follows:

  • Zinc pyrithione which can now be used at concentrations of up to 2.0% in hair products (previously 1.0%)
  • 3-amino-2,6-dimethylphenol which is considered safe for use in oxidative hair dye formulations with an on-head concentration of maximum 2.0%
  • Hydroxyethoxy aminopyrazolopyridine HCl which is considered safe for use in oxidative hair dye formulations with an on-head concentration of maximum 2.0%
  • Basic Brown 17 (8-[(4- Amino-3-nitrophenyl)azo]-7-hydroxy-N,N,N-trimethyl-2-naphthalenaminium chloride) which is considered safe for use in oxidative hair dye formulations with an on-head concentration of maximum 2.0%.

 

 



Bisphenol A levels in toys reduced by Nick Boley
June 25, 2014, 15:39
Filed under: EU Regulation/Legislation, Toys, Uncategorized | Tags: ,

The European Commission has announced that the permitted levels of bisphenol A in toys is reduced to 1 mg/L (migration limit). This covers toys which are intended to be placed in a child’s mouth.

Bisphenol A is strongly suspected of being an endocrine disrupting chemical (EDC). This reduction places increased responsibility on analytical measurement laboratories to be able to detect and quantify accurately bisphenol A in toys in order to assist in effective enforcement.