p-hydroxybenzoic acid是什么意思

网络释义

用法例句

Chemiluminescent detection of p-hydroxybenzoic acid in apple juice;

化学发光法检测苹果汁中的对羟基苯甲酸(英文)

Preparation of p-hydroxybenzoic acid from salicylic acid by rearrangement;

水杨酸重排法制备对羟基苯甲酸

Allelopathic inhibition of p-hydroxybenzoic acid on Microcystis aeruginosa Kueitz with no toxicological effects on Cyprinus carpio Linnaeus;

对羟基苯甲酸对铜绿微囊藻的化感效应以及对鲤鱼的毒性作用

The optimum conditions were determined as follows: the amount of p hydroxybenzoic acid 0.

研究了以十二水硫酸铁铵为催化剂催化合成对羟基苯甲酸丁酯。

The separation behavior of o hydroxybenzoic acid, m hydroxybenzoic acid and p hydroxybenzoic acid in high performance capillary zone electrophoresis was investigated using cetyltrimethylammonium bromide(CTAB) as reversed reagent for electroosmotic flow The effects of pH of buffer solution and volume fraction of methanol on the separation, peak shape and elution order were studie

采用十六烷基三甲基溴化铵 (CTAB)为电渗流改性剂 ,考察了邻羟基苯甲酸、间羟基苯甲酸和对羟基苯甲酸在高效毛细管区带电泳模式下的分离行为 ,研究了缓冲液的pH和添加剂甲醇的用量对这 3种同分异构体的分离、峰形和出峰顺序的影响 ,并据此优化了这 3种异构体的分离条件。

A series of p hydroxybenzoic acid oligomers(HBO) were synthesized of p acetoxybenzoic acid (4 ABA).

用对乙酰氧基苯甲酸合成了一系列对羟基苯甲酸的齐聚物 (HBO) ,由于这些齐聚物不溶于大部分有机溶剂 ,因此尝试用傅立叶红外谱半定量地分析齐聚物的聚合度。

When microwave power was 350 W,irradiation time was 4 min,n(4-hydroxybenzoic acid)/n(benzylchloride)=1/1.

采用微波辐射相转移催化技术,以四丁基溴化铵为相转移催化剂,先将对羟基苯甲酸与碳酸钾成盐,在无有机溶剂和无机载体的条件下与氯化苄直接酯化合成对羟基苯甲酸苄酯。

This study proved firstly that the interaction existed between the allelochemical 4-Hydroxybenzoic acid and Fusarium oxysporum Schl.

通过盆栽试验研究了根系分泌物和腐解物中化感物质对羟基苯甲酸和尖孢镰刀菌草莓专化型(Fusarium oxysporum Schl。

Last, we conduct the physiological impacts of both 4-Hydroxybenzoic acid and cinnamic acid on seedlings of P.

本文从化感作用研究中淋溶作用的角度,采用土培方法,研究毛白杨不同器官及土壤水浸提液物对其幼苗生长的影响;采用高效液相色谱技术,鉴定了毛白杨不同器官中主要酚酸的种类、含量及在土壤中的时空分布特征;通过生物测定的方法测定了8种酚酸对毛白杨幼苗生长的影响;并通过基质培养的方法,研究了对羟基苯甲酸和肉桂酸对毛白杨幼苗生理生化指标的影响。

P-hydroxy benzoic acid and ferulic acid,were used to investigate effects of phenoic acids on growth and activities of protective enzymes of soybean seedlings.

以对羟基苯甲酸和阿魏酸为代表性酚酸类物质,研究其对大豆幼苗生长和保护酶活性的影响。

1 mmol/L p-hydroxy benzoic acid as eluent,colu.

以Shim-pack SCR-102H离子排斥色谱柱为分离柱,选用对羟基苯甲酸为淋洗液。

Synthesis and Characterization of Liquid Crystalline Polymers of Styrene - maleic Anhydride Copolymer Grafted by Poly(p-hydroxy benzoic acid);

采用溶液缩聚法合成了苯乙烯-马来酸酐共聚物接枝聚对羟基苯甲酸侧链液晶高分子,讨论了反应的接枝率和液晶侧链对高聚物热性质的影响。

Application of single drop microextraction in the determination of phthalate esters and parabens in drugs by gas chromatography-mass spectrometry;

微滴液相微萃取技术用于气相色谱-质谱法分析药品中的酞酸酯和对羟基苯甲酸酯

di-ethyl phthalate(DEP),di-propyl phthalate(DPP),di-isobutyl phthalate(DIBP),di-butyl phthalate(DBP),benzyl butyl phthalate(BBP),di-cyclohexyl phthalate(DCHP),di-(2-ethylhexyl) phthalate(DEHP),di-octyl phthalate(DOP) and 4 parabens,i.

采用超声协助甲醇提取、固相萃取净化、气相色谱/选择离子质谱联用法,同时测定化妆品中8种邻苯二甲酸酯和4种对羟基苯甲酸酯。

The paper introduces the preservative action of parabens to surfactants injected with standard ATCC and “wild” pseudomonas aeruginosa that is obtained by chemical detecting method (spectroscopic analysis) to analyze the masses changing of preservative.

介绍了对羟基苯甲酸酯在注入了 ATCC标准绿脓杆菌和“wild”绿脓杆菌的表面活性剂中的防腐作用 ;用化学检测法 (光谱分析 )检测了在注入了 ATCC标准绿脓杆菌和“wild”绿脓杆菌的表面活性剂中防腐剂 (对羟基苯甲酸酯 )质量的变化情况 ;指出绿脓杆菌能代谢羟基在对位上的苯甲酸

propyl para-hydroxybenzoate

丙基对羟基苯甲酸酯

Synthesis of isobutyl p-hydroxybenzoate catalyzed by gallium sulfate

硫酸镓催化合成对羟基苯甲酸异丁酯

Food additive--Propyl p-hydroxybenzoate

GB8851-1988食品添加剂对羟基苯甲酸丙酯

A study on technological improvement for synthesis of benzyl 4-hydroxybenzoate;

对羟基苯甲酸苄酯合成工艺改进研究

Thermodynamic Analysis of Synthesis of Propyl p-hydroxybenzoate

对羟基苯甲酸丙酯的合成热力学分析

The Microwave Synthesis of Methyl p-Hydroxybenzoate with p-Methyl-benzene Sulfonic Acid Catalyzed;

微波作用下对甲苯磺酸催化合成对羟基苯甲酸甲酯

Toxicity and Estrogen Effects of Methyl Paraben on Drosophila melanodaster

对羟基苯甲酸甲酯对果蝇的毒性与雌激素作用

Tentative Study on PHBA/PPS Blend Alloys

聚对羟基苯甲酸/聚苯硫醚共混合金的初步研究

RHEOLOGICAL BEHAVIOUR OF THE COPOLYESTER CONTAINING PHB, TPA, RES AND BHP

含对羟基苯甲酸、对苯二甲酸、间苯二酚、4,4′-二羟二苯酮共聚酯的流变行为研究

The catalytic synthesis of ethyl p-hydroxybenzoate by copper p-toluene sulfonate;

对甲苯磺酸铜催化合成对羟基苯甲酸乙酯的研究

The Synthesis of n-Bulyl p-Hydroxy Enzoate by the Solid Superacid ZrO_2/SO_4~(2-);

固体酸ZrO_2/SO_4~(2-)催化合成对羟基苯甲酸丁酯

Effects of p-hydroxybenzoic Acid on Cowpea Fusarium Wilt Fungus

对羟基苯甲酸对豇豆枯萎病菌的抑制作用

Studies on Supercritical Fluid Chemistry Reaction to Synthesis P-hydroxybenzoic acid;

超临界化学反应合成对羟基苯甲酸的研究

Research Progress in Catalysts for Synthesizing P-Hydroxyl Ethyl Benzoate;

对羟基苯甲酸乙酯合成催化剂的研究进展

Catalytic Synthesis of Isoamyl P-Hydroxy-Benzoate by Dealuminated USY;

脱铝超稳Y沸石催化合成对羟基苯甲酸异戊酯

A discussion on the Synthesis of ethyl p-hydroxybenzoate with different catalysts;

采用不同催化剂合成对羟基苯甲酸的讨论

2,5-dihydroxybenzoic acid

2,5-二羟基苯甲酸

2,4-dihydroxybenzoic acid

２,４－二羟基苯甲酸