Phosphonates (NI-424)

1-Hydroxyethylidene-1,1-diphosphonate (HEDP), Nitrilotris(methylene phosphonate) (NTMP), N,N,N’,N’-Ethylenediaminetetrakis(methylene phosphonate) (EDTMP) and Diethylenetriaminepenta(methylene phosphonate) (DTPMP) were analyzed using IC NI-424.

Sample : 100micro-L
1. 1-Hydroxyethylidene-1,1-diphosphonate, HEDP

2. Nitrilotris(methylene phosphonate), NTMP

3. N,N,N’,N’-Ethylenediaminetetrakis(methylene phosphonate), EDTMP

4. N,N,N’,N’-Ethylenediaminetetrakis(methylene phosphonate), EDTMP

 Column : Shodex IC NI-424 (4.6mmID*100mm)
 Eluent : 3mM H2SO4 aq.
 Flow rate : 1.0mL/min
 Detector : Shodex RI
 Column temp. : 40°C