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(一)使用范围:野外检验新鲜植物中生物硷和强心甙。(二)药品、器材:(1)酒石酸;(2)30%乙醇;(3)碘化鉍钾(溶0.85克次硝酸鉍于20毫升硝酸中,再与27.2克碘化钾浓溶混合,放置过夜、过滤,加食盐25克蒸干、研细);(4)3、5间二硝基苯甲酸、氢氧化钠(临用时现配成约5%氢氧化钠液);(5)小刀;(6)小乳缽;(7)纱布;(8)滴管;(9)吸附剂滤纸(将硅酸和三硅酸镁依4:1比例混合,加等量炒石膏,混合后,加水调成稀糊状,再加数滴盐酸,使pH近7左右,然后均匀地涂布于7.5厘米方形滤纸上,吸附剂圆层直径为7厘米,涂
(I) Scope of use: Field tests of fresh grasshoppers and strong heartworms in fresh plants. (2) Drugs and equipment: (1) tartaric acid; (2) 30% ethanol; (3) potassium cesium iodide (dissolved 0.85 g of lanthanum nitrate in 20 ml of nitric acid, and then mixed with 27.2 g of potassium iodide and left overnight , Filtration, add salt 25 grams evaporated, dry fine); (4) 3,5 dinitrobenzoic acid, sodium hydroxide (appropriately dubbed about 5% sodium hydroxide solution); (5) knife; (6) small emulsion; (7) gauze; (8) dropper; (9) adsorbent filter paper (mix the silicic acid and magnesium trisilicate in a ratio of 4:1, add the same amount of fried gypsum, and add water after mixing. Tune into a thin paste, add a few drops of hydrochloric acid to a pH of approximately 7 and apply evenly on 7.5 cm square filter paper. The diameter of the adsorbent round layer is 7 cm.