伊朗原子能组织主席萨利希说，伊朗已经浓缩了17公斤浓度达到20%的铀。联合国等组织加重了对伊朗的制裁，迫使其削减核计划。
萨利希星期三对伊朗学生通讯社说，伊朗拥有每月生产五公斤浓度达到20%的铀的能力，但是他说，伊朗将只制造首都德黑兰医疗研究反应堆所需数量的铀。
此前一天，美国高级官员说，一份针对伊朗核项目的扩大制裁名单将促使私营公司开始切断和德黑兰的商业联系。
西方大国担心，伊朗在试图将铀浓缩到武器级别纯度。专家说，武器级别的铀纯度大约在90%。
Iran's atomic energy chief says his country has enriched 17 kilograms of uranium to 20 percent purity, as the United Nations and others increase sanctions against the country to pressure it to curtail its nuclear program.
Ali Akbar Salehi told the Iranian Students News Agency (ISNA) Wednesday that the country has the capacity to produce five kilograms of 20-percent-enriched uranium a month. But he says Iran will only make as much as needed for a medical research reactor in the capital, Tehran.
The announcement comes a day after senior U.S. officials said a lengthening list of sanctions against Iran's nuclear program has prompted private companies to begin to cut their business ties with Tehran.
Western powers are concerned that Iran is seeking to enrich uranium to a purity high enough to make nuclear weapons, which experts say is around 90 percent.
