Arsenic Trioxide Stock Solution— Dissolve 132.0 mg of arsenic trioxide, previously dried at 105 for 1 hour and accurately weighed, in 5 mL of sodium hydroxide solution (1 in 5) in a 1000-mL volumetric flask. Neutralize the solution with 2 N sulfuric acid, add 10 mL more of 2 N sulfuric acid, then add recently boiled and cooled water to volume, and mix.
Standard Arsenic Solution— Transfer 10.0 mL of Arsenic Trioxide Stock Solution to a 1000-mL volumetric flask, add 10 mL of 2 N sulfuric acid, then add recently boiled and cooled water to volume, and mix. Each mL of Standard Arsenic Solution contains the equivalent of 1 µg of arsenic (As). Keep this solution in an all-glass container, and use within 3 days.
Arsenic Trioxide Stock Solution：Dissolve 132.0 mg of arsenic trioxide, previously dried at 105 for 1 hour and accurately weighed, in 5 mL of sodium hydroxide solution (1 in 5) in a 1000-mL volumetric flask. Neutralize the solution with 2 N sulfuric acid, add 10 mL more of 2 N sulfuric acid, then add recently boiled and cooled water to volume, and mix. 三氧化二砷储备液：准确称量132.0mg事先在105℃干燥1小时的三氧化二砷，在1000mL容量瓶中把称量的三氧化二砷溶解于5mL 1 in 5的氢氧化钠溶液中。用2N的硫酸中和该溶液，中和后再加10mL 2N的硫酸，用新煮沸后冷却的水稀释该溶液至刻度，摇匀。
Standard Arsenic Solution： Transfer 10.0 mL of Arsenic Trioxide Stock Solution to a 1000-mL volumetric flask, add 10 mL of 2 N sulfuric acid, then add recently boiled and cooled water to volume, and mix. Each mL of Standard Arsenic Solution contains the equivalent of 1 µg of arsenic (As). Keep this solution in an all-glass container, and use within 3 days. 标准砷溶液：移取10.0mL三氧化二砷储备液于1000mL容量瓶，加入10mL 2N的硫酸，用新煮沸后冷却的水稀释该溶液至刻度，摇匀。每毫升标准砷溶液相当于含1µg砷。把该溶液存于全玻璃容器中，在配制后3天内使用。
The apparatus (see illustration) consists of an arsine generator (a) fitted with a scrubber unit (c) and an absorber tube (e) with standard-taper or ground glass ball-and-socket joints (b and d) between the units. However, any other suitable apparatus, embodying the principle of the assembly described and illustrated, may be used. 仪器（如图）包括一个胂发生器（a），装有一个洗涤塔单元（c），和一个吸收器（e），这些部件通过标准锥度或球窝磨口玻璃接头连接。也可以使用其它符合这样工作原理的仪器。
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