１引言将阴离子交换膜置于阳极（钢样）和阴极之间，建立了一种新的采集钢样的电解法。该法可阻止从阳极溶解下来的待测组分再沉积到阴极上。但在先前工作中，是用氧化还原滴定阳极液中铁的量作钢样被采集的量，使方法尚欠简单且有一定的误差。这里根据碳素钢的牌号即表示碳的? 1 Introduction Anion exchange membrane placed between the anode (steel sample) and the cathode, the establishment of a new collection of steel samples electrolysis. This method prevents the analyte dissolved from the anode from being redeposited onto the cathode. However, in the previous work, the amount of iron in the anolyte titration solution was taken as the steel sample to be collected, which made the method less simple and with some errors. Here according to the carbon steel grades that carbon?