亚洲最大看欧美片_亚洲国产中字幕在线尤视频_中文亚洲爆乳无码区_一级国语特黄毛片

ǰλã̿ > ИI(y)„ >

̿Ʒζ^ԭ

2012-11-26 15:32 Դ:δ֪

̿Ʒζ^ԭ

    ڷ̿ЕrƷλƫߣDz`߀rˎƷ^Ҭuh(hun)Ƽ޹˾njI(y)a(chn)Ҭ̿̿۱ϩȮa(chn)ƷƷλƫߺƫͻf`̫Ӱ^Ʃ绯򞷽˞gߵJ̶ȣO侫ȼ(wn)ˎƷ|h(hun)͜ضȵ˲ߏ·`r`°빦Ҫ͵ҾлY|ұ^Ҏ(gu)Ĵλȥ

̿ԇƣ

̿-{̎̿0.074mmĻ̿20g/L NH4HF2Һн3d^VHCl (2+98)ˮϴ7~8Ρ̎Ļ̿c{Ըɕr|Ȱ12

˜ҺQȡ0. 0500g(99.99ϣ100mLУl0mLˮw60~70ˮԡϼӟܽ8~10250g/L NaClҺڷˮԡϼӟȡ1mL HCI^m(x)ڷˮԡȡ¼ˮ΢ʹ}ȫȡҜأʢ5mL HCI500mLƿˮϡ̶ȣҺ100μg/mLAu

c˜ҺQȡ25. 2gc(Na2S2O3·5H2O)кssˮ0. 1g Na2CO3ˮϡ1LҺpH7.2~7.5)Һ1mLஔl0mg Au

քeȡ30mL100mLҺl0L¿ƿ1goˮNa2CO3l0mLȷssˮϡ10L,uһܺMИ˶ȡ30μg100μg Au50mLУ3~5250g/L NaClҺ2~3mLˮˮԡ3~4HCI؏̓ɴȻÃɷNc˜Һζ1mLҺஔAu|(1mLքeஔ30μgl00μg),μg/mL

    ̿{ԇˮֽϡˮ|û̿Au̿һƟˮHCI|NH4HF2EDTAڱFeCuȸɔ_ԪKIAu3+߀ԭAu+ͬrxI2Ե۞ָʾc˜ҺζmһVʯω(Au)/10-6>0.5Ĝy

̿Ʒζ^ԭԴԣhttp://www.solberg-racing.com

    oP
Ҭuh(hun)Ƽ޹˾ ַʡx܇ԪI(y)^(q) g֧֣ xAW(wng)j
N۟ᾀ0371-66550800 0371-64350022 棺0371-66550800 C15538339800 “(lin)ϵˣ(jng)