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物料
fused silica
质量水平
Agency
EPA TO-17,502.2,624,8015,8260,OLM04.2 VOA,524.2
NIOSH 1003
参数
≤25-230 °C temperature (isothermal or programmed)
β值
27
df
3.00 μm
技术
gas chromatography (GC): suitable
长度 × 内径
60 m × 0.32 mm
应用
environmental
food and beverages
forensics and toxicology
industrial hygiene
色谱柱类型
capillary intermediate polar
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一般描述
应用：这种被设计用于挥发性有机化合物（VOC）分析的中间极性色谱柱可为高挥发性化合物提供较高的保留时间和分辨率。可直接通过进样端口或偶联至吹扫捕集系统而使用该色谱柱。
USP代码：非
相：
USP代码：非
相：
- 结合
- 永久
- ≤0.32 mm I.D., <2 μm: 亚常温至250 °C (等温或程序性的)
- ≤0.32 mm I.D., ≥2 μm: 亚常温至230 °C (等温或程序性的)
- ≥0.53 mm I.D., <2 μm: 亚常温至250 °C (等温或程序性的)
- ≥0.53 mm I.D., ≥2 μm: 亚常温至230 °C (等温或程序性的)
应用
VOCOL® column (diphenyl dimethyl polysiloxane with crosslinking moieties) may be used for their relevancy to the purge-and-trap technique and GC/MS analysis of 34 volatile organics. It was also found suitable in being used for determination of volatile compounds by whole column cryotrapping.
其他说明
We offer a variety of chromatography accessories including analytical syringes
法律信息
VOCOL is a registered trademark of Merck KGaA, Darmstadt, Germany
法规信息
新产品
Determination of volatile compounds in water by purging directly to a capillary column with whole column cryotrapping.
Pankow JF and Rosen ME.
Environmental Science & Technology, 22 (4), 398-405 (1988)
Adrian Fourcin
Logopedics, phoniatrics, vocology, 35(2), 74-80 (2010-06-12)
Voice is a dominant component of everyday speech in all languages. The possibility is examined that its use may have evolved so that its timing in connected speech is ideal from the point of view of information theory-with voicing taking
Eric Manders et al.
Logopedics, phoniatrics, vocology, 36(4), 139-144 (2011-03-10)
In this study we investigated how important significant others find it to be informed, supported, and trained by speech-language pathologists (SLPs) and to what extent they perceive their expectations and needs as to these aspects to be fulfilled. Furthermore SLPs
Teija Waaramaa et al.
Logopedics, phoniatrics, vocology, 40(4), 156-170 (2014-07-08)
Vocal emotions are expressed either by speech or singing. The difference is that in singing the pitch is predetermined while in speech it may vary freely. It was of interest to study whether there were voice quality differences between freely
Irena Vincent et al.
Logopedics, phoniatrics, vocology, 37(1), 22-32 (2011-12-14)
To investigate voice changes as they develop over time due to cigarette smoking, women who never smoked (NS), women who smoked less than 10 years (S1), and women who smoked 10 or more years (S2) were compared. Acoustic (fundamental frequency
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