Methods for the Determination of Hazardous Substances (MDHS) guidance

The following guidance is also available in hard copy from HSE Books.

• MDHS guidance 3-25/3
• MDHS guidance 27-48
• MDHS guidance 52/3-75
• MDHS guidance 76-100
• MDHS guidance 101-125

MDHS guidance 3-25/3

• MDHS3 Generation of test atmospheres of organic vapours by the syringe injection technique Portable apparatus for laboratory and field use [200kb]

• MDHS4 Generation of test atmospheres of organic vapours by the permeation tube method Apparatus for laboratory use [192kb]

• MDHS6/3 Lead and inorganic compounds of lead in air Laboratory method using flame or electrothermal atomic absorption spectrometry [108kb]

• MDHS10/2 Cadmium and inorganic compounds of cadmium in air Laboratory method using flame atomic absorption spectrometry or electrothermal atomic absorption spectrometry [56kb]

• MDHS12/2 Chromium and inorganic compounds of chromium in air Laboratory method using flame atomic absorption spectrometry [100kb]

• MDHS14/3 General methods for sampling and gravimetric analysis of respirable and inhalable dust [128kb]

• MDHS16/2 Mercury and its inorganic divalent compounds in air Laboratory method using Hydrar diffusive badges or pumped sorbent tubes, acid dissolution and analysis by cold vapour atomic absorption spectrometry or cold vapour atomic flourescence spectrometry PDF [204kb]

• MDHS25/3 Organic isocyanates in air Laboratory method using sampling either onto 1-(2-methoxyphenyl) piperazine coated glass fibre filters followed by solvent desorption or into impingers and analysis using high performance liquid chromatography [108kb]

MDHS guidance 27-48

• MDHS27 Protocol for assessing the performance of a diffusive sampler [160kb]

• MDHS29/2 Beryllium and beryllium compounds in air Laboratory method using flame atomic absorption spectrometry or electrothermal atomic absorption spectrometry [102kb]

• MDHS30/2 Cobalt and cobalt compounds in air Laboratory method using flame atomic absorption spectrometry [85kb]

• MDHS32 Dioctyl phthalates in air Laboratory method using Tenax sorbent tubes, solvent desorption and gas chromatography [488kb]

• MDHS33/2 Sorbent tube standards Preparation by the syringe injection technique [84kb]

• MDHS35/2 Hydrogen fluoride and fluorides in air Laboratory method using an ion selective electrode or ion chromatography [116kb]

• MDHS39/4 Asbestos fibres in air sampling and evaluation by Phase Contrast Microscopy (PCM) under the Control of Asbestos at Work Regulations [161kb]

• MDHS41/2 Arsenic and inorganic compounds of arsenic (except arsine) in air Laboratory method using continuous flow or flow injection analysis hydride generation atomic absorption spectrometry [68kb]

• MDHS42/2 Nickel and inorganic compounds of nickel in air (except nickel carbonyl) Laboratory method using flame atomic absorption spectrometry or electrothermal atomic absorption spectrometry PDF [140kb]

• MDHS46/2 Platinum metal and soluble platinum compounds in air Laboratory method using electrothermal atomic absorption spectrometry or inductively coupled plasma-mass spectrometry [100kb]

• MDHS47/2 Determination of rubber processes dust and rubber fume (measured as cyclohexane-soluble material) in air Laboratory method using filters, gravimetric determination and soxhlet extraction [84kb]

MDHS guidance 52/3-75

• MDHS52/3 Hexavalent chromium in chromium plating mists Colorimetric field method using 1,5:diphenylcarbazide PDF [116kb]

• MDHS53/2 1,3-Butadiene in air. Laboratory method using pumped samplers, thermal desorption and gas chromatography [108kb]

• MDHS54 Protocol for assessing the performance of a pumped sampler for gases and vapours [712kb]

• MDHS56/2 Hydrogen cyanide in airLaboratory method using an ion-selective electrode [720kb]

• MDHS57 Acrylamide in air Laboratory method using high performance liquid chromatography after collection in an impinger containing water [220kb]

• MDHS59 Man-made mineral fibre Airborne number concentration by phase-contrast light microscopy [244kb]

• MDHS61 Total hexavalent chromium compounds in air [96kb]

• MDHS62 Aromatic carboxylic acid anhydrides in air Laboratory method using glass-fibre filter/Tenax tube sampling and high performance liquid chromatography [120kb]

• MDHS63/2 - 1,3-Butadiene in air - Laboratory method using diffusive samplers, thermal desorption and gas chromatography[114kb]

• MDHS70 General methods for sampling airborne gases and vapours [100kb]

• MDHS71 Analytical quality in workplace air monitoring [868kb]

• MDHS72 Volatile organic compounds in air Laboratory method using pumped solid sorbent tubes, thermal desorption and gas chromatography [708kb]

• MDHS75 Aromatic amines in air and on surfaces Laboratory method using pumped acid-coated filter, desorption and liquid chromatography [324kb]

MDHS guidance 76-100

• MDHS78 Formaldehyde in air. Laboratory method using a diffusive sampler, solvent desorption and high performance liquid chromatography [32kb]

• MDHS79 Peroxodisulphate salts in air. Laboratory method using mobile phase ion chromatography [84kb]

• MDHS 80 Volatile organic compounds in air. Laboratory method using diffusive solid sorbent tubes, thermal desorption and gas chromatography [492kb]

• MDHS 82 The dust lamp. A simple tool for observing the presence of airborne particles [128kb]

• MDHS 83/2 Resin acids in rosin (colophony) solder flux fume. Laboratory method using gas chromatography [220kb]

• MDHS 84 Measurement of oil mist from mineral oil-based metalworking fluids [76kb]

• MDHS 85 Triglycidyl isocyanurate (and coating powders containing triglycidyl isocyanurate) in air. Laboratory method using pumped filter, desorption and liquid chromatography [84kb]

• MDHS 86 Hydrazine in air. Laboratory method using sampling either onto acid-coated glass fibre filters followed by solvent desorption or into specially constructed impingers. Final analysis by derivatisation and HPLC [84kb]

• MDHS 87 Fibres in air. Guidance on the discrimination between fibre types in samples of airborne [112kb]

• MDHS 88 Volatile organic compounds in air. Laboratory method using diffusive samplers, solvent desorption and gas chromatography [108kb]

• MDHS 89 Dimethyl sulphate and diethyl sulphate in air. Laboratory method using thermal desorption, gas chromatography-mass spectrometry [76kb]

• MDHS 91 Metals and metalloids in workplace air by X-ray fluorescence spectrometry [192kb]

• MDHS 92 Azodicarbonamide in air. Laboratory method using high performance liquid chromatography [84kb]

• MDHS 93 Glutaraldehyde in air. Laboratory method using high performance liquid chromatography [76kb]

• MDHS 94 Pesticides in air and/or on surfaces. Methods for the sampling and analysis of pesticides in air and/or on surfaces, using pumped filters/sorbent tubes and gas chromatography [124kb]

• MDHS 95/2 Measurement of personal exposure of metalworking machine operators to airborne water-mix metalworking fluid [130kb]

• MDHS 96 Volatile organic compounds in air - Laboratory method using pumped solid sorbent tubes, solvent desorption and gas chromatography [128kb]

• MDHS 98/2 Hydroquinone in air - Laboratory method using high performance liquid chromatography [47kb]

• MDHS 99 Metals in air by ICP-AES [57kb]

• MDHS 100 Surveying, sampling and assessment of asbestos-containing materials [764kb]

MDHS guidance 101-125

• MDHS101 - Crystalline silica in respirable airborne dusts PDF [145kb]

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• List of all MDHS publications and their current status