agency
meets requirements for USP G25
form
solid
packaging
bottle of 10 g
parameter
temp. range at 50-250 °C, 50-250 °C temp. range
technique(s)
gas chromatography (GC): suitable
matrix active group
Free fatty acid phase (FFAP) phase
solubility
chloroform: soluble
column type
packed GC
General description
GC 方法根据固定相的性质分为两类；气固色谱 (GSC) 和气液色谱 (GLC)。GSC 含有固体吸附材料，可通过静电力将溶质颗粒从流动相中除去。GLC 在惰性颗粒表面或色谱柱壁上有一层薄薄的液体涂层或粘结层，其中溶质颗粒根据其分配系数保留在液相中。固定相的基本要求是在一段合理的时间内提供样品分离和保持相的完整性。其应该对化学和热变化稳定。选择性、峰对称性、分析时间、分离度、峰拖尾是选择固定相之前应考虑的几个参数。游离脂肪酸相（FFAP）是 Carbowax 20M 的酸性形式。它可防止色谱柱上的拖尾和氢键。此外，它还用作独特液相，用于游离酸分析。
合成的产品更纯净，分子量范围窄，不含用作 GC 固定相的痕量催化剂或杂质。
Application
FFAP 与 Porapak Q 一起可以用作顶空气相色谱法中的固定相，用于分离和分析挥发性脂肪酸。
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
L Larsson et al.
Journal of clinical microbiology, 7(1), 23-27 (1978-01-01)
A head-space gas chromatographic technique for the analysis of volatile bacterial metabolites is described. Bacteroides fragilis, Clostridium perfringens, and Propionibacterium acnes, cultured in a glucose-containing peptone yeast extract medium, were studied. The head-space technique was compared with the injection of
Wetzel, G. Charalambous
Instrumental Methods in Food and Beverage Analysis, 202-202 (1998)
David B. Troy, Paul Beringer
Remington: The Science and Practice of Pharmacy, 605-605 (2006)