Glossary of Chemistry & Environmental Protection: terms & abbreviations   Dutch-English, French-English, German-English

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M
= Haldane's affinity factor; the Haldane constant (tox.) / MAB = Man and Biosphere Programme / mâchefers = clinker; slag (waste incineration) / Magnetrührverfahren = magnetic stirring (digestion) method / maillard produkten = Maillard products, mutagenic organic compounds created by the Maillard reaction when natural products are heated, responsible for e.g. the taste of grilled meat / malaoxon (pest.) / maleic hydrazide (pest.) / mancozeb (pest.) / maneb (pest.) / MAR = maximum acceptable residue (tox.) / marble bed absorber (type of scrubber) / MARL = maximum acceptable risk level / MATC = 1. maximum acceptable tolerated concentration; 2. maximum acceptable toxicant concentration / MBAS = methylene blue active substances (dyestuffs) / MBC = (syn. BMC) = methyl benzimidazole 2 yl carbamate (the fungicide carbendazim) / MBT = Milieu-Beleid Tuinbouw (NL) = (suggest) Environmental Policy for Horticulture / MCL = maximum contaminant level (USA-EPA; also known as the "drinking water standard") / MEA = multilateral environmental agreement (WTO) / mecoprop, mecoprop-P (pest.) / MCPA = 2-methyl-4-chlorophenoxyacetic acid / MCPB = methylchlorophenobutyric acid / MEB = microscope éléctronique à balayage = scanning electron microscope (microscopy) (SEM) / Mehrfachzucker = polysaccharide / MEK = methyl ethyl ketone (solvent) / MER = milieu-effectenrapportage = environmental impact assessment / merbromine = merbromin; mercurochrome / Meßkolben = volumetric flask, marked TC (to contain) or TD (to deliver) / Meßpipette = graduated pipette; variable volume pipette / MES = matières en suspension = suspended solids; suspended matter; suspended particulates, see also MEST; MST / MEST; MST = matières en suspension totales, see TSS) / MET = microscope éléctronique à transmission = transmission electron microscope (TEM) / metam-sodium (pest.) / methabenzthazuron (pest.) / méthanisation = anaerobic digestion (waste management) / methazole (pest.) / methoxychlor (pest.) / methyl bromide / metoxuron (pest.) / MFA = muffle furnace ashing / MIBK = methyl isobutyl ketone / MIC = methyl isocyanate (tox.) (agent responsible for Bhopal accident, India 1984) / microgranules neutres = neutral pellets (pharm.) / micro-pipette (with hyphen - BS, vols. less than 1 ml) / micropipette à déplacement positif = positive displacement micro-pipette / mierezuur = formic acid / Mietenverfahren = piling (biopile) / MIK = Maximale Immissionskonzentration (D) = maximum immission concentration (tox.); this is an ambient limit for certain air pollutants (contrast MAK). Definition: the maximum outdoor atmospheric concentration measured at ground level or in dust and the maximum quantity precipitated on to the ground which at current levels of scientific knowledge is believed not to be harmful to humans, animals and plants / Milchsaft = latex / milieu = medium; environment / Mineralöl = 1. mineral oil  (refinded distillate of petroleum, with many uses in industy as e.g. lubricant and in medicine as laxative; synonyms "liquid petrolatum", paraffin oil"); 2. petroleum; oil (non-specialist use as syn. for Erdöl) / MINK region (USA) (Missouri, Iowa, Nebraska and Kansas: subject of climate study by US Department of Energy) / mirex (pest.) / MLVSS = mixed liquor volatile suspended solids (effluent treatment) / MMAD = mass median aerodynamic diameter (particle sampling) / MMD = mass median diameter (particles) / MMH = methyl mercury hydroxide / MOCA = methylene-2-0-chloraniline / teneur moléculaire = molality / Monoelementlampe = single element lamp (spectrophot.) / MOPS = morpholino-propane sulphonic acid / MOS = margin of safety / mouvements (of personnel around a laboratory) = "traffic" / MPI = Milieuplan Industrie (NL) / MPN test = most probable number test (bacterial count e.g.) / MPP = 1. methyl-phenylpyridinium; 2. Milieu-Praktijkplan (NL) = (suggest) Practical Plan for the Environment / MTPT = methyl-phenyl-tetrahydropuridine / MRF = 1. materials recovery facility (waste); 2. municipal recycling facility (waste) / MRM = multiresidue method (tox.) / MS = mass spectrometry / MSDS = material safety data sheet (OSH) / MSW = municipal solid wastes / MTBE = methyl tertiary butyl ether (ingredient in unleaded petrol) / MTR = maximaal toelaatbare risico(niveau) = maximum acceptable risk level (MARL) / MTT = maximaal toelaatbare tolerantie = maximum acceptable toxicant concentration (MATC) / Müllschieber = waste trafficker / multifilière = multistream (waste processing) / MVT = moisture vapour transmission / MW = molecular weight


Created by Alison Gaunt
Last updated: 16 February 2018 
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