Acid rain sampling, measuring and analyzing instrument

The invention discloses an acid rain sampling, measuring and analyzing instrument which comprises metal shells. The metal shells are laminated and treated. A method for laminating and treating the metal shells includes steps of 1), sequentially inputting, by weight, 1-2 parts of dodecyl trimethyl ammonium bromide, 2.5 parts of aluminum oxide, 1.6 parts of dibutyl phthalate and 0.9 part of alum into 50 parts of deionized water and uniformly stirring the dodecyl trimethyl ammonium bromide, the aluminum oxide, the dibutyl phthalate, the alum and the deionized water to obtain first mixtures; 2), sequentially inputting, by weight, 15.5 parts of styrene, 9.9 parts of hydroxy propyl methylcelluloses, 1.8 parts of alkylphenol ethoxylate and 0.9 part of potassium tetraborate into the first mixtures, and continuing to stir the styrene, the hydroxy propyl methylcelluloses, the alkylphenol ethoxylate, the potassium tetraborate and the first mixtures until the styrene, the hydroxy propyl methylcelluloses, the alkylphenol