陕西师范大学学报（自然科学版）
陝西師範大學學報（自然科學版）
협서사범대학학보（자연과학판）
JOURNAL OF SHAANXI NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2014年
6期
45-49
,共5页
pH 振荡%有机弱酸盐%苯甲酸钠%山梨酸钾%柠檬酸
pH 振盪%有機弱痠鹽%苯甲痠鈉%山梨痠鉀%檸檬痠
pH 진탕%유궤약산염%분갑산납%산리산갑%저몽산
pH oscillation%organic weak acid salts%sodium benzoate%potassium sorbate%citric acid
采用连续流动进样装置研究了苯甲酸钠、山梨酸钾及柠檬酸对 BrO3－-SO2－3-Fe（CN）4－6-H＋（简称 BSF）体系 pH 振荡行为的影响。结果表明：这些弱酸盐均具有对体系 pH 振幅降低的作用，且盐浓度与振幅呈线性关系；当弱酸盐达到一定浓度时，振荡消失。弱酸盐对 pH 振荡周期具有一定的缩短作用。弱酸盐对 pH 振荡行为的上述影响与其对体系 pH 缓冲作用及原盐效应有关。
採用連續流動進樣裝置研究瞭苯甲痠鈉、山梨痠鉀及檸檬痠對 BrO3－-SO2－3-Fe（CN）4－6-H＋（簡稱 BSF）體繫 pH 振盪行為的影響。結果錶明：這些弱痠鹽均具有對體繫 pH 振幅降低的作用，且鹽濃度與振幅呈線性關繫；噹弱痠鹽達到一定濃度時，振盪消失。弱痠鹽對 pH 振盪週期具有一定的縮短作用。弱痠鹽對 pH 振盪行為的上述影響與其對體繫 pH 緩遲作用及原鹽效應有關。
채용련속류동진양장치연구료분갑산납、산리산갑급저몽산대 BrO3－-SO2－3-Fe（CN）4－6-H＋（간칭 BSF）체계 pH 진탕행위적영향。결과표명：저사약산염균구유대체계 pH 진폭강저적작용，차염농도여진폭정선성관계；당약산염체도일정농도시，진탕소실。약산염대 pH 진탕주기구유일정적축단작용。약산염대 pH 진탕행위적상술영향여기대체계 pH 완충작용급원염효응유관。
The effects of sodium benzoate,potassium sorbate,and citric acid on pH oscillation of BrO3 --SO2-3 -Fe(CN)4-6 -H+ (BSF)system were studied using a continuous flow stirred setup. The amplitude of the pH oscillation could be depressed by organic weak acid salts,and there were linear relationship between the amplitude and concentration of these salts.The oscillation could be depressed thoroughly as the concentration of salts is beyond certain concentration.Additional-ly,the period of the pH oscillation could be shortened by these salts.The phenomena above men-tioned could be explained in terms of the buffering effect and primary salt effect.The present re-search is significant for studying the effects of weak acid salts on the pH oscillation.
