JP2007101564A - クロマトグラフィー・システムの自動設置適格性確認方法 - Google Patents
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Abstract
【解決手段】クロマトグラフィー・システムの自動設置適格性確認方法は、設置データの詳細をオラクル(登録商標)・データベース・テーブル内に格納し、当該テーブルに格納された各記録に対して一意のシークエンスを生成し、当該記録の削除を防止し、データ・オブジェクトを用いて設置データにアクセスする、
【選択図】図1
Description
S=A/C=ε×b=一定
明白な感度Sは、計測器の動的範囲にわたり一定でないが、しかし感度の相対標準偏差の大きさ(%RSD)は、その変化の程度の良好な尺度である。感度が較正曲線の直線部分と曲線部分の両方の部分上に落ちる吸光度の値で測定される場合、感度のこのRSDは、直線動的範囲の良好な尺度になる。
Ameans=log{(1+%s/100)/(10−A+%s/100)}
ここで、Ameans=測定された吸光度、A=迷光の無い真の吸光度、及び%s=%で表される迷光である。
式1 蛍光=F=f(θ)×g(λem)×φf×P0(λex)×(1-exp{εbC})
ここで、f(θ)は検出器の幾何学的収集効率であり、g(λem)は放出波長における光電子倍増管の応答であり、φfは検体の量子効率であり、P0(λex)は励起波長での源の放射パワーであり、εはモル吸収率であり、bは経路長であり、Cは検体の濃度である。
式2: 蛍光=F≒定数×P0(λex)×C
この式は、吸光度の小さい値(<0.01)に対してのみ正しく、そこにおいてテイラー級数の2次及びそれより高次項は無視できる。式1及び式2の検査は、以下のパラメータが観測された蛍光信号に強力に影響を与えることを示す。これらのパラメータは次のとおりで、即ち励起波長、放出波長、ソース強度、光電子増倍管の励起波長応答特性、検体の濃度、及び検体の量子効率である。
式3: V0=π×dc 2×ε×L/4=t0×Vf
ここで、dc=カラムの直径(cm)、ε=カラム空隙率、L=カラム長(cm)、t0=保持されない構成要素(成分)に対する「保持時間」(分)、及びVf=容積測定流量(mL/分)である。
式4: (1/t0)=(1/V0)×Vf=1/V0×(Vf+誤差)
従って、量1/t0対Vfのプロットは線形であろう。それが形式、Y=A0+A1×Xの線形方程式に対して回帰される(regress)ならば、X切片が計算される。それは、次の形式を持つであろう。
式5: X切片=−A0/A=流量誤差
図7を参照すると、式5が図示されている。上記の計算は、溶媒配送システムの動作範囲にわたる寄与を含むが、ピークが保持されないためポンプの組成的誤差(compositional errors)からの寄与を含まない容積測定流量誤差を計算する利点を有する。
範囲=定数×量=定数×Vinj×濃度
一連の注入が行われ、そこにおいてVinjが変えられ且つサンプル濃度が一定に保持される場合、上記式は次式のようになる。
範囲=定数×(Vinj+ε)=定数×Vinj+定数×ε
ここで、εは容積測定誤差である。再度、ピーク範囲のプロットがVinjに対して回帰されるならば、X切片は、次式により与えられる。
X切片=−定数×ε/定数=−ε
図8は上記のアプローチを図示する。
走行されたカラム容量の小部分=VR/{V0(1+k’)}
VRが小さいとき、強力に保持されたピークが走行するカラムの小部分(fraction)が非常に小さく、そしてその溶質は、カラムの入口で「集束(focus)」されていると言われる。k’=0であるとき、保持されない溶質が注入器からカラム入口までの遅延容量に会い、それはサンプル散乱を低減するため最小にされるべきである。移動相が初期条件から100%有機改質剤(organic modifier)にステップ状に移る場合、「収束された」溶質がここで、保持されなくなり、そしてその移動容量は、遅延容量並びにカラム・ボイド容量、及び初期条件で送られた移動相の容量を含む。図9を参照すると、上記の原理が図示されている。
式6: VR=V0×(1+k’)
ここで、V0=カラムのボイド容量、及びk’=検体に対する容量係数(capacity factor)である。
式7: k’=K×θ=CS×θ/CM
ここで、K=平衡定数=CS/CM、及びθ=相比(phase ratio)=VS/V0であり、VSはカラム内に含まれる固定相の容量であり、V0はカラム内に含まれる移動相の容量である。平衡定数は、式8により与えられるように温度への通常の熱力学的依存性を持つ。
式8: ln(K)=lnk’−lnθ=−1/RT×ΔGO
ここで、ΔGOは検体を固定相と移動相との間で仕切ることに関連したギブスの自由エネルギである。lnk’対1/T(°K)のプロットは、(−ΔGO/R)の勾配及びlnθの切片の場合線形である。2組の保持時間測定値がカラム温度(30℃から60℃まで)の関数である一例が図10に示されている。式6及び式8がある一定の温度でもって保持時間の非線形依存性を予測しながら、図11は、ある短い範囲の温度にわたり妥当性のある程度の直線性が存在することを立証している。
12 溶媒配送システム
14 カラム
16 検出器
18 データ・システム
Claims (1)
- クロマトグラフィー・システムの自動設置適格性確認方法において、
設置データの詳細をオラクル(登録商標)・データベース・テーブル内に格納するステップと、
前記テーブルに格納された各記録に対して一意のシークエンスを生成するステップと、
前記記録の削除を防止するステップと、
データ・オブジェクトを用いて前記データにアクセスするステップと
を備える方法。
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EP (1) | EP1342202B1 (ja) |
JP (3) | JP2004515770A (ja) |
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JP4921993B2 (ja) | 2012-04-25 |
EP1342202B1 (en) | 2013-11-06 |
WO2002047009A1 (en) | 2002-06-13 |
JP2004515770A (ja) | 2004-05-27 |
EP1342202A4 (en) | 2008-08-06 |
US20020107652A1 (en) | 2002-08-08 |
JP5291421B2 (ja) | 2013-09-18 |
US6456955B1 (en) | 2002-09-24 |
JP2009031305A (ja) | 2009-02-12 |
AU2002225956A1 (en) | 2002-06-18 |
EP1342202A1 (en) | 2003-09-10 |
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