Poland's syndrome: A Case Report

Lee, Han Jin; Kim, Ki Tae; Kang, Shi Won; Bahk, Yong‐Whee

doi:10.3348/jkrs.1987.23.2.211

Cited by 1 publication

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in equation above, the longer length may require the longer extraction time. 14,15 The INME needle with the 2 cm length of PAA-PDMS (7:3) adsorbent phase showed the smallest peak area because 2 min desorption time might be too short to fully desorb the analytes.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed conditions for GC-FID and GC-MS were indicated in the previous reports. 14,15 Analytes were identified by retention time, mass spectrum, NIST and Wiley libraries, and database that was established in our laboratory. 14,15 Optimization and Application of HS-INME with PAA-PDMS Adsorbent Phase.…”

Section: Methodsmentioning

confidence: 99%

“…14,15 Analytes were identified by retention time, mass spectrum, NIST and Wiley libraries, and database that was established in our laboratory. 14,15 Optimization and Application of HS-INME with PAA-PDMS Adsorbent Phase. Four different mixing ratios of PAA and PDMS mixtures as an extraction phase, three various diameters of a micro-bore tunnel of the INME needle, and three different length of the extraction phase were selected and evaluated by HS-INME.…”

Section: Methodsmentioning

confidence: 99%

“…14 In addition, the modified INME platform that uses the nichrome wire coated with polyethylene glycol and PDMS inserted into the INME needle has recently been fabricated to characterize the volatile aroma compounds from the lavender essential oils. 15,16 For these microextractions based on needles, the analytes were flown into the inside of the internally coated needle with adsorbent for extraction via adsorption mechanism, injected simultaneously to the GC injector for desorption, and analyzed on the column. The INME device is simple, prompt, and sustainable as extraction and concentration processes were simultaneously conducted due to no solvent required.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Use of Polyacrylic Acid and Polydimethylsiloxane Mixture for In‐Needle Microextraction of Volatile Aroma Compounds in Essential Oils

Jeon

Son²,

Bae

et al. 2015

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

A prototype stainless steel needle (Hamilton 90022, 22 gauge, 718 µm o.d., 413 µm i.d., 51 mm length, bevel tip) packed with polyacrylic acid (PAA) and polydimethylsiloxane (PDMS) mixture (7:3 ratio) having a micro‐bore tunnel (290 µm i.d., ca. 61.5 µm thickness, 10 mm length) was newly prepared as a device of headspace in‐needle microextraction (HS‐INME). Design of the needle, optimization of adsorption, desorption parameters, and validation of analytical methods were conducted to evaluate the HS‐INME efficiency for volatile organic compounds. The optimized adsorption conditions were 60 °C for 20 min and desorption conditions were 240 °C for 2 min. The calibration curves showed good linearity with the squared correlation coefficient value (r2) over 0.99. The limit of detection for linalool, (+)‐limonene, and eugenol were 13.5, 10.9, and 9.1 ng while limit of quantification were 45.1, 36.4, and 30.5 ng, respectively. The recovery results showed the acceptable range between 95.6 and 115.3%. The relative standard deviations for intra‐ and inter‐assay showed the values less than 10%. It was applied to analyze seven essential oils for polar and nonpolar volatile aroma compounds successfully. From the results obtained in this study, HS‐INME was advantageous to low cost due to ease of fabrication, reuse without loss of absorbent or reduction of extraction efficiency, and no use of solvent. In conclusion, a needle packed with PAA and PDMS mixture having a micro‐bore tunnel is a new development of INME that may complement the shortcomings of the current headspace extraction methods.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%