演題概要

ポスター発表

第3日　5月17日（金）　　P会場（多目的ホール）

3P-01　　PDF

探針穿刺によるオンサイトサンプリングとシースフロー探針エレクトロスプレー(sfPESI)を組み合わせたadjustable sheath-flow probe electrospray ionization (ad-sfPESI) の開発と植物や食品分析への応用

(¹山梨大・ ²Loughborough Univ.・ ³九州沖縄農研・ ⁴中央農業研究セ・ ⁵愛媛大農)
^o平岡賢三¹・ ランキンターナステファニ²・ 二宮啓¹・ 和田博史³・ 中野洋³・ 松村正哉³・ 真田森村幸代³・ 田中福代⁴・ 野並浩⁵

The sample was pricked with an acupuncture needle inserted in the sf-PESI probe that protruded from the terminus of the tip by 5 mm. The invasion depth of the needle into the sample was ca. 1 mm. After sampling, the needle was retracted into the solvent-preloaded capillary with a protrusion length of 0.1 mm from the tip. A mass spectrum of sample captured on the needle was obtained by applying a high voltage to the needle. This method could be applicable to profiling analysis of plants with epicuticular wax covering on the surfaces that are difficult to analyze by sf-PESI. The on-site mass spectrometric analysis for a growing apricot in the field was made to monitor the developing stage of the fruit.